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Homemade Ultra Low Resistance Continuity Checker

Ultra Low Resistance Continuity Checker
rgsparber on
Homemade ultra low resistance continuity checker utilized in machining as an electronic edge finder. Capable of detecting changes of up to 0.2 milliohms and measuring down to 10 milliohms. Circuit incorporates a Wheatstone bridge. Powered by a 9v battery and two 1.5v batteries.
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