Category:Popular Mechanics, 1928

Media in category "Popular Mechanics, 1928"

The following 200 files are in this category, out of 520 total.

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  Popular Mechanics - 1928 01 - 001 - Radio Waves that Cast Shadows.png 1,027 × 1,290; 476 KB
  
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  Popular Mechanics - 1928 01 - 002 - Elevated to a 300-Foot Mast.png 1,033 × 657; 442 KB
  
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  Popular Mechanics - 1928 01 - 003 - Condensers Are Set at Angles.png 509 × 855; 184 KB
  
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  Popular Mechanics - 1928 01 - 003 - Forest-Fire Engine.png 703 × 319; 112 KB
  
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  Popular Mechanics - 1928 01 - 004 - By Working the Handle Back and Forth.png 500 × 382; 87 KB
  
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  Popular Mechanics - 1928 01 - 004 - Taking the Sea-sickness Cure on Deck.png 501 × 705; 151 KB
  
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  Popular Mechanics - 1928 01 - 005 - Secrets of the World's Fastest Seaplanes.png 1,031 × 1,493; 731 KB
  
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  Popular Mechanics - 1928 01 - 006 - Electrical Man Obeys Human Voice.png 1,028 × 959; 502 KB
  
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  Popular Mechanics - 1928 01 - 007 - Gas Mask as Diver's Helmet.png 500 × 569; 166 KB
  
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  Popular Mechanics - 1928 01 - 007 - Turn of Wrist Works Jack.png 502 × 593; 131 KB
  
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  Popular Mechanics - 1928 01 - 008 - Defects in Speech Recorded.png 506 × 477; 139 KB
  
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  Popular Mechanics - 1928 01 - 008 - Speed Boat to Cross Atlantic.png 711 × 438; 187 KB
  
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  Popular Mechanics - 1928 01 - 009 - A Futuristic Billboard Figure.png 409 × 701; 117 KB
  
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  Popular Mechanics - 1928 01 - 009 - One of the Concrete Bridges.png 1,038 × 479; 266 KB
  
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  Popular Mechanics - 1928 01 - 010 - Light Shines Around Curves.png 503 × 559; 168 KB
  
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  Popular Mechanics - 1928 01 - 010 - Operating the Clockwork Razor.png 500 × 538; 142 KB
  
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  Popular Mechanics - 1928 01 - 011 - Skylining our Lumber.png 1,033 × 777; 483 KB
  
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  Popular Mechanics - 1928 01 - 012 - With the Spar Tree Set Up.png 1,044 × 1,496; 495 KB
  
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  Popular Mechanics - 1928 01 - 013 - Skylining.png 1,036 × 1,259; 544 KB
  
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  Popular Mechanics - 1928 01 - 014 - Gripping Tongs That Clutch the Stubborn Clinker.png 508 × 471; 140 KB
  
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  Popular Mechanics - 1928 01 - 014 - Two Views of a Sixty-Mile Flume.png 710 × 881; 379 KB
  
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  Popular Mechanics - 1928 01 - 015 - Interpreting Nature in Glass.png 503 × 432; 121 KB
  
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  Popular Mechanics - 1928 01 - 015 - Machine Solves Problems Too Deep for Brain.png 1,038 × 622; 362 KB
  
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  Popular Mechanics - 1928 01 - 016 - Basket Ball Without Lacing.png 287 × 246; 38 KB
  
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  Popular Mechanics - 1928 01 - 016 - Ten-Mile Tunnel Under Sea.png 1,032 × 677; 402 KB
  
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  Popular Mechanics - 1928 01 - 017 - Auto Bed That Disappears.png 500 × 361; 107 KB
  
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  Popular Mechanics - 1928 01 - 017 - Miniature Castle Doll House.png 714 × 654; 255 KB
  
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  Popular Mechanics - 1928 01 - 018 - Running a Sea.png 1,039 × 826; 542 KB
  
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  Popular Mechanics - 1928 01 - 019 - Going Hotel.png 1,043 × 1,492; 908 KB
  
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  Popular Mechanics - 1928 01 - 020 - The Punch and Judy Show.png 1,037 × 769; 468 KB
  
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  Popular Mechanics - 1928 01 - 021 - The Play Room of a Modern Liner.png 1,044 × 1,561; 959 KB
  
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  Popular Mechanics - 1928 01 - 022 - The Circular Stairway of a New Liner.png 1,029 × 776; 465 KB
  
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  Popular Mechanics - 1928 01 - 023 - At Sea on the Stormy North Atlantic.png 1,039 × 1,496; 926 KB
  
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  Popular Mechanics - 1928 01 - 024 - The Ile de France on Her Maiden Trip.png 708 × 791; 362 KB
  
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  Popular Mechanics - 1928 01 - 025 - Cultivating the Ramie Plants.png 500 × 474; 130 KB
  
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  Popular Mechanics - 1928 01 - 025 - The Fire-Escape Slide.png 710 × 828; 314 KB
  
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  Popular Mechanics - 1928 01 - 026 - Digging Up The.png 1,038 × 1,494; 848 KB
  
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  Popular Mechanics - 1928 01 - 027 - Bible Lands.png 1,036 × 819; 481 KB
  
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  Popular Mechanics - 1928 01 - 028 - Steps That Were Carefully Matched from Natural Rock.png 713 × 951; 425 KB
  
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  Popular Mechanics - 1928 01 - 029 - The Monastery of Ste. Catherine.png 1,037 × 1,568; 966 KB
  
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  Popular Mechanics - 1928 01 - 030 - Rebuilding the Pillars of the Synagogue at Capernaum.png 614 × 959; 358 KB
  
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  Popular Mechanics - 1928 01 - 031 - Workers.png 1,059 × 1,559; 929 KB
  
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  Popular Mechanics - 1928 01 - 032 - Curves that Fool the Eye.png 1,044 × 1,247; 748 KB
  
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  Popular Mechanics - 1928 01 - 033 - Close View of the Lather Bulb.png 492 × 407; 94 KB
  
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  Popular Mechanics - 1928 01 - 033 - Riding the Inclined Ducking Wheel.png 708 × 571; 217 KB
  
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  Popular Mechanics - 1928 01 - 034 - Street of the City of the Future.png 1,034 × 583; 345 KB
  
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  Popular Mechanics - 1928 01 - 035 - Cross Section of the Future City.png 1,036 × 1,510; 995 KB
  
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  Popular Mechanics - 1928 01 - 036 - Block of Buildings Rising in Terraced Masses.png 519 × 1,504; 433 KB
  
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  Popular Mechanics - 1928 01 - 037 - Elevated Sidewalks May Connect Various Levels.png 1,040 × 1,498; 934 KB
  
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  Popular Mechanics - 1928 01 - 038 - Elevated Sidewalks in Colonnades.png 712 × 792; 349 KB
  
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  Popular Mechanics - 1928 01 - 039 - Ball in Tube Tests Brakes.png 286 × 254; 31 KB
  
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  Popular Mechanics - 1928 01 - 039 - German Policemen Studying Model Section of Berlin.png 1,033 × 580; 352 KB
  
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  Popular Mechanics - 1928 01 - 039 - Spring Driven Rotary Toothbrush.png 497 × 394; 110 KB
  
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  Popular Mechanics - 1928 01 - 040 - Magic of Invisible Lights.png 716 × 691; 225 KB
  
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  Popular Mechanics - 1928 01 - 040 - To Rouse the Indifferent Motorist.png 716 × 567; 218 KB
  
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  Popular Mechanics - 1928 01 - 041 - State Elephant of the Prince of Mysore.png 512 × 801; 233 KB
  
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  Popular Mechanics - 1928 01 - 041 - Stencil Picture of the National Capitol.png 510 × 355; 117 KB
  
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  Popular Mechanics - 1928 01 - 042 - Ravages of the Moth Larva in Walnut.png 504 × 596; 178 KB
  
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  Popular Mechanics - 1928 01 - 042 - Receiving Paris Fashion Designs by Radio.png 501 × 786; 185 KB
  
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  Popular Mechanics - 1928 01 - 043 - Wealth from Ambergris.png 1,036 × 570; 270 KB
  
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  Popular Mechanics - 1928 01 - 044 - Into Port with a Whale.png 510 × 848; 233 KB
  
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  Popular Mechanics - 1928 01 - 044 - Lump of Ambergris That Brought Fisherman 6,720.png 655 × 473; 167 KB
  
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  Popular Mechanics - 1928 01 - 045 - Game Tests Autoists' Skill.png 1,038 × 582; 326 KB
  
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  Popular Mechanics - 1928 01 - 045 - Souvenir Bedroom Slippers of Paper.png 508 × 341; 96 KB
  
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  Popular Mechanics - 1928 01 - 046 - Baggage Carrier on Running Board.png 507 × 372; 100 KB
  
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  Popular Mechanics - 1928 01 - 046 - Cactus Plant with Some of the Apples.png 509 × 631; 147 KB
  
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  Popular Mechanics - 1928 01 - 047 - Caging the Floods Behind Steel and Concrete.png 1,038 × 1,504; 881 KB
  
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  Popular Mechanics - 1928 01 - 048 - Lunch Car is Easily Moved on Giant Casters.png 709 × 434; 175 KB
  
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  Popular Mechanics - 1928 01 - 048 - Waves are Made with Boxes.png 724 × 550; 248 KB
  
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  Popular Mechanics - 1928 01 - 049 - Orchids Grown Under Glass Rival Tropical Kin.png 1,049 × 1,087; 600 KB
  
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  Popular Mechanics - 1928 01 - 050 - Putting Your.png 1,042 × 936; 452 KB
  
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  Popular Mechanics - 1928 01 - 051 - Imagination to Work.png 1,042 × 939; 374 KB
  
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  Popular Mechanics - 1928 01 - 052 - Demonstration of Apparatus Used by Scientists.png 1,033 × 693; 351 KB
  
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  Popular Mechanics - 1928 01 - 053 - A Woman Receiving the Fatigue Test.png 1,030 × 697; 400 KB
  
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  Popular Mechanics - 1928 01 - 053 - Lock Washer.png 265 × 296; 43 KB
  
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  Popular Mechanics - 1928 01 - 054 - Pupils Receiving Hearing Test.png 1,041 × 559; 347 KB
  
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  Popular Mechanics - 1928 01 - 054 - Springs As Long As The Car.png 506 × 168; 45 KB
  
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  Popular Mechanics - 1928 01 - 055 - Glue and Wooden Pegs Hold This Norwegian Church Together.png 513 × 661; 166 KB
  
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  Popular Mechanics - 1928 01 - 055 - Stabilizer in Place on Airplane Wings.png 501 × 730; 160 KB
  
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  Popular Mechanics - 1928 01 - 056 - Sixty-Five Years of Progress in Locomotives.png 1,053 × 1,497; 906 KB
  
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  Popular Mechanics - 1928 01 - 057 - Foot Lever on Wash Basin.png 496 × 461; 119 KB
  
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  Popular Mechanics - 1928 01 - 057 - Steel Lattice around High Smokestacks.png 505 × 625; 184 KB
  
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  Popular Mechanics - 1928 01 - 058 - Brake on Airplane Propeller.png 512 × 788; 196 KB
  
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  Popular Mechanics - 1928 01 - 058 - Huge Pansies beside Stack of Books.png 479 × 706; 138 KB
  
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  Popular Mechanics - 1928 01 - 059 - There's Money in it, but.png 1,037 × 811; 417 KB
  
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  Popular Mechanics - 1928 01 - 060 - Noah's Ark.png 1,033 × 783; 478 KB
  
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  Popular Mechanics - 1928 01 - 061 - Sliding Down a Hill.png 717 × 1,003; 426 KB
  
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  Popular Mechanics - 1928 01 - 062 - A Baby-Size Whip in the Children's Park.png 1,036 × 651; 402 KB
  
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  Popular Mechanics - 1928 01 - 063 - Gearless Motor Car.png 506 × 521; 142 KB
  
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  Popular Mechanics - 1928 01 - 063 - How the Eyes Reveal Disease.png 506 × 497; 133 KB
  
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  Popular Mechanics - 1928 01 - 064 - Flexible-Cable Landing Light.png 500 × 497; 122 KB
  
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  Popular Mechanics - 1928 01 - 064 - Grasshopper Weather Vane Honors Business Man.png 514 × 787; 185 KB
  
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  Popular Mechanics - 1928 01 - 065 - Weighing Pollen.png 1,052 × 1,024; 539 KB
  
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  Popular Mechanics - 1928 01 - 066 - Breaking the World's.png 1,029 × 727; 383 KB
  
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  Popular Mechanics - 1928 01 - 067 - Big Gun Record.png 1,027 × 761; 459 KB
  
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  Popular Mechanics - 1928 01 - 068 - Six of the California's Great Rifles.png 1,034 × 813; 445 KB
  
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  Popular Mechanics - 1928 01 - 069.png 1,048 × 1,576; 871 KB
  
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  Popular Mechanics - 1928 01 - 070 - The Breech of One of the Turret Guns.png 1,027 × 763; 420 KB
  
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  Popular Mechanics - 1928 01 - 071 - Aquarium Transformed into Church.png 501 × 341; 89 KB
  
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  Popular Mechanics - 1928 01 - 071 - Novel Siphon Employs Bulb.png 496 × 602; 118 KB
  
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  Popular Mechanics - 1928 01 - 072 - Native Mongol Hut and New Variety.png 720 × 796; 327 KB
  
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  Popular Mechanics - 1928 01 - 072 - Strip Insulation From Wire.png 256 × 209; 36 KB
  
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  Popular Mechanics - 1928 01 - 073 - Catching Big Game Fish from Small Boats.png 1,043 × 1,492; 865 KB
  
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  Popular Mechanics - 1928 01 - 074 - Filling Tire from the Automatic Air Station.png 498 × 511; 143 KB
  
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  Popular Mechanics - 1928 01 - 074 - Sled with Roller Runners.png 512 × 703; 207 KB
  
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  Popular Mechanics - 1928 01 - 075 - Eight-Cent Gold-Digger Earns Millions.png 1,031 × 755; 424 KB
  
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  Popular Mechanics - 1928 01 - 076 - The Excavating Chain.png 709 × 790; 284 KB
  
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  Popular Mechanics - 1928 01 - 077 - The Miner.png 1,033 × 962; 566 KB
  
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  Popular Mechanics - 1928 01 - 078 - Cutting a Channel 500 Feet Wide.png 1,036 × 845; 504 KB
  
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  Popular Mechanics - 1928 01 - 078 - Egg Timer Rings Bell When Done.png 265 × 239; 39 KB
  
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  Popular Mechanics - 1928 01 - 079 - Correcting His Own Lip Movements.png 499 × 558; 148 KB
  
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  Popular Mechanics - 1928 01 - 079 - Dance Hall Like Monoplane.png 609 × 395; 128 KB
  
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  Popular Mechanics - 1928 01 - 080 - Jewels that Aided Columbus.png 614 × 422; 153 KB
  
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  Popular Mechanics - 1928 01 - 080 - Sight-Seeing Bus at the Zoo.png 702 × 572; 222 KB
  
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  Popular Mechanics - 1928 01 - 081 - Sea Flea for Ocean Flight.png 1,021 × 722; 368 KB
  
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  Popular Mechanics - 1928 01 - 081 - Striping Autos Made Easy.png 260 × 347; 53 KB
  
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  Popular Mechanics - 1928 01 - 082 - Hunting Bears.png 1,025 × 659; 255 KB
  
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  Popular Mechanics - 1928 01 - 083 - With a Camera.png 1,031 × 1,557; 911 KB
  
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  Popular Mechanics - 1928 01 - 084 - Pair of Small Cubs, and a Mother Bear.png 1,036 × 1,432; 731 KB
  
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  Popular Mechanics - 1928 01 - 085 - Mail Dropped from Airplane.png 711 × 887; 286 KB
  
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  Popular Mechanics - 1928 01 - 086 - Just Off the Plane.png 517 × 985; 279 KB
  
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  Popular Mechanics - 1928 01 - 086 - Sleeves for Trouser Legs.png 289 × 592; 87 KB
  
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  Popular Mechanics - 1928 01 - 087 - Artistic Brick Buildings Show German Skill.png 1,035 × 1,489; 669 KB
  
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  Popular Mechanics - 1928 01 - 088 - Awning is Adjusted to Sun.png 504 × 384; 112 KB
  
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  Popular Mechanics - 1928 01 - 088 - Bathers' Push Wheel.png 1,039 × 638; 395 KB
  
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  Popular Mechanics - 1928 01 - 089 - Abraham Lincoln Shown in Latest Statue.png 708 × 784; 275 KB
  
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  Popular Mechanics - 1928 01 - 089 - Movie Camera and Projector.png 268 × 236; 32 KB
  
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  Popular Mechanics - 1928 01 - 090 - The Most Dangerous Hour.png 1,038 × 652; 392 KB
  
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  Popular Mechanics - 1928 01 - 091 - 28,000 Accidents in New York State.png 1,031 × 1,425; 594 KB
  
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  Popular Mechanics - 1928 01 - 092 - Reckless Driving Explains the Bulk of Auto Accidents.png 1,041 × 1,430; 629 KB
  
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  Popular Mechanics - 1928 01 - 093 - The Train Won This Race.png 1,032 × 920; 398 KB
  
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  Popular Mechanics - 1928 01 - 093 - Trigger Guard for Shotguns.png 491 × 178; 45 KB
  
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  Popular Mechanics - 1928 01 - 094 - Doughnuts Cooked at Table.png 710 × 519; 221 KB
  
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  Popular Mechanics - 1928 01 - 094 - For Traffic Regulation in Curved Street.png 506 × 644; 193 KB
  
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  Popular Mechanics - 1928 01 - 095 - Guardians of the Night.png 1,034 × 1,484; 772 KB
  
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  Popular Mechanics - 1928 01 - 096 - Glare Shade for Auto Mirror.png 256 × 242; 33 KB
  
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  Popular Mechanics - 1928 01 - 096 - Glider Steered by Motors.png 706 × 586; 263 KB
  
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  Popular Mechanics - 1928 01 - 096 - Plug in Ceiling-Light Socket.png 264 × 465; 48 KB
  
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  Popular Mechanics - 1928 01 - 097 - Monaco-Home of the Ocean's Story.png 1,024 × 660; 408 KB
  
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  Popular Mechanics - 1928 01 - 098 - Folding Auto-Luggage Trunk.png 523 × 357; 95 KB
  
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  Popular Mechanics - 1928 01 - 098 - Palace of the Princes of Monaco.png 1,038 × 644; 371 KB
  
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  Popular Mechanics - 1928 01 - 099 - Auto Battery Filler.png 253 × 278; 42 KB
  
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  Popular Mechanics - 1928 01 - 099 - Hand-Size Vacuum Cleaner.png 261 × 302; 48 KB
  
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  Popular Mechanics - 1928 01 - 099 - Spray Nozzle on Fire Hose.png 624 × 421; 133 KB
  
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  Popular Mechanics - 1928 01 - 100 - Brush Cleans Between Teeth.png 275 × 140; 22 KB
  
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  Popular Mechanics - 1928 01 - 100 - Looping the Loop on His Head.png 739 × 928; 389 KB
  
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  Popular Mechanics - 1928 01 - 101 - Weird Architecture Helps to Sell Ice Cream.png 1,037 × 1,494; 841 KB
  
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  Popular Mechanics - 1928 01 - 102 - Alaska Reindeer to Supply Future Meat.png 1,036 × 1,463; 616 KB
  
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  Popular Mechanics - 1928 01 - 103 - Fingerprints are Duplicated with Machine.png 508 × 491; 138 KB
  
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  Popular Mechanics - 1928 01 - 103 - Shoe Cafe Building in California.png 699 × 517; 171 KB
  
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  Popular Mechanics - 1928 01 - 104 - A Seat-Pack Chute.png 503 × 650; 174 KB
  
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  Popular Mechanics - 1928 01 - 104 - Tumbling Headfirst from a Plane.png 1,031 × 620; 389 KB
  
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  Popular Mechanics - 1928 01 - 105.png 1,044 × 1,498; 524 KB
  
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  Popular Mechanics - 1928 01 - 106 - Electric Hands Move Cars.png 510 × 385; 118 KB
  
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  Popular Mechanics - 1928 01 - 106 - Giant Hoop for Generator.png 714 × 810; 333 KB
  
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  Popular Mechanics - 1928 01 - 107 - Endless Track for Toy Train.png 714 × 272; 116 KB
  
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  Popular Mechanics - 1928 01 - 107 - Rowing Practice in His Yard.png 1,036 × 662; 374 KB
  
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  Popular Mechanics - 1928 01 - 108 - Shark Ship Hunts Sea Terrors.png 1,042 × 1,492; 893 KB
  
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  Popular Mechanics - 1928 01 - 109 - Excelsior Building Blocks.png 511 × 578; 159 KB
  
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  Popular Mechanics - 1928 01 - 109 - Menace of Fly's Footprints.png 514 × 553; 167 KB
  
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  Popular Mechanics - 1928 01 - 110 - New Ways To.png 1,049 × 1,562; 945 KB
  
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  Popular Mechanics - 1928 01 - 111 - Avoid Home Drudgery.png 1,041 × 1,558; 879 KB
  
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  Popular Mechanics - 1928 01 - 112 - Chart to Teach Typewriting.png 503 × 568; 179 KB
  
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  Popular Mechanics - 1928 01 - 112 - Electrical Peaks and Dips.png 499 × 472; 125 KB
  
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  Popular Mechanics - 1928 01 - 113 - Pipe-Cleaning Set in Holder.png 252 × 189; 21 KB
  
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  Popular Mechanics - 1928 01 - 113 - Portable Foot Bridge of Pipe.png 1,030 × 742; 405 KB
  
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  Popular Mechanics - 1928 01 - 114 - Cabinet Conceals Cookstove.png 505 × 668; 208 KB
  
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  Popular Mechanics - 1928 01 - 114 - Soft Rubber as Upholstering.png 484 × 478; 122 KB
  
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  Popular Mechanics - 1928 01 - 115 - Flying Boat the Carries Ten.png 1,030 × 564; 303 KB
  
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  Popular Mechanics - 1928 01 - 115 - Stop Watch for Football.png 256 × 353; 46 KB
  
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  Popular Mechanics - 1928 01 - 116 - Icy Jewels of the Winter Storms.png 1,036 × 376; 181 KB
  
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  Popular Mechanics - 1928 01 - 117.png 1,036 × 1,428; 732 KB
  
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  Popular Mechanics - 1928 01 - 118 - Examples of the Perfect Symmetry of Snow Crystals.png 1,032 × 364; 200 KB
  
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  Popular Mechanics - 1928 01 - 119 - Auto Map Like Roller Shade.png 495 × 451; 117 KB
  
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  Popular Mechanics - 1928 01 - 119 - Kite Shaped Like Monoplane.png 508 × 568; 126 KB
  
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  Popular Mechanics - 1928 01 - 120 - Furniture Child Can Build.png 501 × 332; 93 KB
  
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  Popular Mechanics - 1928 01 - 120 - Weird Image Health Guards.png 709 × 669; 241 KB
  
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  Popular Mechanics - 1928 01 - 121 - A-Battery and Charger.png 1,039 × 895; 382 KB
  
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  Popular Mechanics - 1928 01 - 122.png 1,035 × 793; 431 KB
  
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  Popular Mechanics - 1928 01 - 123.png 1,036 × 522; 305 KB
  
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  Popular Mechanics - 1928 01 - 124 - Ball-Antenna Kit.png 300 × 269; 40 KB
  
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  Popular Mechanics - 1928 01 - 124 - Homemade Fuses on Battery Cable.png 500 × 466; 119 KB
  
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  Popular Mechanics - 1928 01 - 125 - Facts and Fads for Radio Fans.png 1,043 × 1,545; 919 KB
  
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  Popular Mechanics - 1928 01 - 126 - Aero-Dyne Six.png 1,617 × 1,043; 994 KB
  
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  Popular Mechanics - 1928 01 - 127 - Rear View of Completed Set.png 1,030 × 477; 271 KB
  
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  Popular Mechanics - 1928 01 - 127 - Selectivity Feature of Aero-Dyne Six.png 1,010 × 680; 294 KB
  
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  Popular Mechanics - 1928 01 - 128.png 1,041 × 749; 379 KB
  
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  Popular Mechanics - 1928 01 - 129 - Drilling Template.png 1,031 × 741; 257 KB
  
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  Popular Mechanics - 1928 01 - 129 - Underside View and Assembling Coils.png 1,036 × 556; 206 KB
  
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  Popular Mechanics - 1928 01 - 130 - Snap Terminals on Battery Leads.png 310 × 451; 74 KB
  
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  Popular Mechanics - 1928 01 - 131 - Battery-Testing Kink.png 299 × 301; 47 KB
  
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  Popular Mechanics - 1928 01 - 131 - Helpful Hints from Radio Experts.png 1,030 × 596; 366 KB
  
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  Popular Mechanics - 1928 01 - 131 - Output Impedance for Power Tube.png 314 × 178; 25 KB
  
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  Popular Mechanics - 1928 01 - 132 - Bunched Leads for Sharp Tuning.png 509 × 442; 105 KB
  
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  Popular Mechanics - 1928 01 - 133 - Controlling Tone and Volume.png 501 × 617; 150 KB
  
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  Popular Mechanics - 1928 01 - 133 - Resistance C-Bias for B-Eliminator.png 308 × 455; 74 KB
  
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  Popular Mechanics - 1928 01 - 134 - Efficient Radio Ground Easily Installed.png 310 × 771; 136 KB
  
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  Popular Mechanics - 1928 01 - 135 - New Tube Is Self-Neutralized.png 1,034 × 892; 436 KB
  
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  Popular Mechanics - 1928 01 - 136 - Light-Sensitive Tube.png 502 × 426; 100 KB
  
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  Popular Mechanics - 1928 01 - 137 - Amateur Mechanics.png 1,039 × 274; 185 KB