State the precautions that we have to put in consideration as you measure the length of an object using a vernier calipers
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- Do not apply excessive force to the work piece. Excessive measuring force will develop instrument error because of the positional deviation of the jaw or deformation of the work piece.
- Take reading on the vernier / main scale in a viewing direction perpendicular to the measured point on the scales.
- Do not use the vernier as a stick or screw driver. Do not throw it on the table
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