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click the link to measure using vernier.

http://www.radian.com.hk/simulations/index.html#/details/13

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Random errors : can not be predicted. can be minimised by repeated reading and averaging.

Systematic Errors: Which are the same for each measurement, can be removed by using another instrument.

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Record value from instrument

Use calibration curve to read off the corrected “real” value

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When the jaws are closed and if the reading is −0.08mm, the zero error is referred to as −0.08 mm. The method to use a vernier scale or caliper with zero error is to use the formula 'actual reading = main scale + vernier scale − (zero error)' thus the actual reading is 19.00 + 0.36 − (−0.08) = 19.44 mm

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When the jaws are closed and if the reading is 0.10mm, the zero error is referred to as +0.10mm. The method to use a vernier scale or caliper with zero error is to use the formula 'actual reading = main scale + vernier scale − (zero error)' thus the actual reading is 19.00 + 0.54 − (0.10) = 19.44 mm

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Measure lengths using rulers, calipers and micrometers

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Measure lengths using rulers, calipers and micrometers