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Roberval Balance 2

Roberval Balance 2

Bill W.
Description
fancy version. Pivots are knife edges rather than tortion hinges. therefore no top counterweight is needed to counter the tortion resistance during balancing/tilting. The drawback is that knife edges wear as do their bearings (brass in this case) I'm hoping this will measure up to about 5 kilograms. Not finished yet. Todo: add brass bearings in the center. change knives to steel from brass. Add calibration weights to lower arm Add needle to upper arm, and a vernier to the top.
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