Measurement in the metal working industry. No.4. Verniers

Description: A detailed study of the principles of the vernier scale, and its application to precision measurment, using animation and direct photography. The care of vernier-scaled tools is emphasised; particular care must be taken of such tools if they are to maintain their accuracy.

Online Copy: https://www.youtube.com/watch?v=_XoTZQGouSA

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