Category:Contact thermometers
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Media in category "Contact thermometers"
The following 3 files are in this category, out of 3 total.
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Kontaktth.jpg 1,403 × 418; 124 KB
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Kontaktthspiral.jpg 1,150 × 1,319; 348 KB
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Patent 448786 Deutsches Reichspatent Kontakt-Thermometer 1926.jpg 754 × 1,282; 133 KB