Category:Seismometers, Antique
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Media in category "Seismometers, Antique"
The following 7 files are in this category, out of 7 total.
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Antique Chinese seismograph.jpg 1,164 × 1,764; 382 KB
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Han Earthquake-detecting Machine Model - 1.jpg 480 × 640; 106 KB
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Han Earthquake-detecting Machine Model - 2.jpg 4,752 × 3,168; 2.38 MB
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Model of First Earthquake-Detecting Machine.jpg 3,168 × 4,752; 2.6 MB