Field olfactometer used to detect and measure odor strength in the air.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...r_fullsize.jpg
Previously:
Specular reflection gloss meter - video
Explosimeter gauge - photo
Spherical densiometer for measuring forest density - photo
HVAC balometer - photo
Last edited by Altair; Oct 20, 2020 at 07:33 PM.
New plans added on 11/04: Click here for 2,561 plans for homemade tools.
nova_robotics (Oct 20, 2020), Toolmaker51 (Oct 22, 2020)
Audience could find this handy, at political speeches or a rally......
Sincerely,
Toolmaker51
...we'll learn more by wandering than searching...
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