0.02 mm is the least count of vernier caliper and screw gauge.
0.02 mm is the least count of vernier caliper and screw gauge.
least count of vernier caliper and screw gauge?
0.02 mm
calipers may read to a resolution of 0.01 mm or 0.0005 in, but accuracy may not be better than about ±0.02 mm or 0.001 in for 150 mm (6 in) calipers, and worse for longer ones.









































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a caliper must be properly applied against the part in order to take the desired measurement. for example, when measuring the thickness of a plate a vernier caliper must be held at right angles to the piece. some practice may be needed to measure round or irregular objects correctly.
calipers
for example, a sundial may only have scale marks representing the hours of daylight; it would have a least count of one hour. a stopwatch used to time a race might resolve down to a hundredth of a second, its least count. the stopwatch is more precise at measuring time intervals than the sundial because it has more "counts" (scale intervals) in each hour of elapsed time.









































least count of an instrument is one of the very important tools in order to get accurate readings of instruments like vernier caliper and screw gauge used in various experiments.
least count