Spine scoliometer.
Previously:
Bubble level - video
Shark with scoliosis - GIF
Spine scoliometer.
Previously:
Bubble level - video
Shark with scoliosis - GIF
New plans added on 11/04: Click here for 2,561 plans for homemade tools.
Looks identical to the sort of gauge I've seen used to measure roll angle on a ship...
https://www.amazon.com/Sun-Company-2.../dp/B00042K694
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Regards, Marv
Experience is always far worse than pessimism
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