Ratchet and pawl mechanism.
<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/pawl_ratchet_mechanism.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...740#post206221
https://www.homemadetools.net/forum/...114#post203384
https://www.homemadetools.net/forum/...399#post166130
https://www.homemadetools.net/forum/...765#post194035
https://www.homemadetools.net/forum/...615#post193415
