File:Vintage Keuffel & Esser Company Beginner's Slide Rule (Reverse Side), No. 4058C, All Wood Framed Cursor, Made In USA, Circa 1930s (31955561837).jpg
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[edit]DescriptionVintage Keuffel & Esser Company Beginner's Slide Rule (Reverse Side), No. 4058C, All Wood Framed Cursor, Made In USA, Circa 1930s (31955561837).jpg |
English: Keuffel & Esser "Beginner's Slide Rule" (reverse side), model 4058C, wood-framed cursor, made in USA, circa 1930s. This is the underside of a low-cost slide rule intended for students and other beginners, with its scales printed directly on wood rather than engraved into celluloid facing. It is a basic "Mannheim-type" slide rule, with two single-decade (1-to-10) scales C and D for ordinary multiplication and division, and two two-decade (1-to-100) scales A and B for calculations involving squares and square roots. This is a view of the rule's underside, which has an extensive table of equivalents. On the right end is a transparent notch with hairline; this shows the back side of the removable, reversible slide, with its sine (S), tangent (T), and logarithm (L) scales.) |
Date | |
Source | Vintage Keuffel & Esser Company Beginner's Slide Rule (Reverse Side), No. 4058C, All Wood Framed Cursor, Made In USA, Circa 1930s |
Author | Joe Haupt from USA |
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This image was originally posted to Flickr by France1978 at https://flickr.com/photos/51764518@N02/31955561837. It has been reviewed on 2021-05-06 06:38:33 by FlickreviewR 2, who found the author on the bad authors list. This means that the Flickr user is known to upload images with possibly problematic license information. The image should be checked carefully because some Flickr users are blacklisted for only a limited portion of their uploads. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:38, 6 May 2021 | 4,006 × 2,242 (2.75 MB) | Colin Douglas Howell (talk | contribs) | {{Information | Description = {{en|Keuffel & Esser "Beginner's Slide Rule" (reverse side), model 4058C, wood-framed cursor, made in USA, circa 1930s. This is the underside of a low-cost slide rule intended for students and other beginners, with its scales printed directly on wood rather than engraved into celluloid facing. It is a basic "Mannheim-type" slide rule, with two single-decade (1-to-10) scales C and D for ordinary multiplication and division, and two two-decade (1-to-100) scales A a... |
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Camera manufacturer | Polaroid |
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Camera model | iS2132 |
Author | Picasa |
Copyright holder | Copyright 2012 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/3.9 |
ISO speed rating | 100 |
Date and time of data generation | 00:08, 27 January 2019 |
Lens focal length | 10.4 mm |
Horizontal resolution | 96 dpi |
Vertical resolution | 96 dpi |
Software used | 1.0900 |
File change date and time | 14:13, 27 January 2019 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 00:08, 27 January 2019 |
Meaning of each component |
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Image compression mode | 8 |
APEX shutter speed | 5.906 |
APEX aperture | 3.925 |
APEX exposure bias | 0 |
Maximum land aperture | 3.263 APEX (f/3.1) |
Metering mode | Multi-Spot |
Light source | Unknown |
Flash | Flash fired, strobe return light not detected, compulsory flash firing |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 58 mm |
Scene capture type | 255 |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Unique image ID | 3b9d1b667952d7fb973011f53c7ce0cc |
IIM version | 4 |