Mystery Object #6 ANSWER
Our Own Devices
@canadianmacgyverAbout
Ever wonder how a rotary telephone works, how sailors and pilots navigated by the stars, or how mechanical calculators perform complex math using only gears? Then you've come to the right place! Our Own Devices is a channel dedicated to the fascinating world of vintage technology, and the many elegant and ingenious ways our ancestors solved even the most complex technical problems. Want more fascinating history? I am a regular staff writer for Today I Found Out and many of its sister channels: https://www.youtube.com/@TodayIFoundOut I also have a historical adventure novel titled 'Our Own Devices' set in 1920s Morocco. Check it out at my personal website: www.gillesmessier.ca And finally, I make 1920s/30s-style Art Deco posters, which you can purchase on my Etsy store: https://www.etsy.com/ca/shop/DecoEchoes
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Video Description
In the last video, I showed you an instrument related to a field of human activity important to my specific region of Canada. This instrument is a Tri-Met Model 393 Grain Moisture Tester, used by farmers to determine if a crop is dry enough to store and ship without rotting. Special thanks to Colin Craddock and Julian Horn for their invaluable assistance with this video. SOURCES: https://www.agricheminc.com/downloads/Feedgrain-297.pdf https://open.alberta.ca/publications/afmrc-446 https://www.grainscanada.gc.ca/en/grain-quality/grain-grading/grading-factors/moisture-content/moisture-meter-conversion-tables.html https://patents.google.com/patent/US4462250A/en?oq=4462250
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