caliper to 5 per cent millimeters and micrometer to 1 millimeter per cent.
both are used in accurate measuring in a wide range of environments
Micrometer to measure the accuracy of 0.01 mm. Caliper to measure with accuracy of 0.1 mm is used.
Vernier calipers are used to measure length when quite accurate measurement is required, but not such accuracy as to require a micrometer.
If the caliper is properly calibrated, then neither system is more accurate. Accuracy depends on the quality of the measuring, not the unit used.
A meter stick caliper is very large and would make general measurements. A micrometer caliper is much smaller and can be used to make much smaller measurements.
caliper. Micrometer
Micrometer caliper
A machinist such as a lathe operator would use a micrometer caliper for precise measurements of the product he is machining, Also used by designers of precision parts and programmers of precision machines.
vernier-caliper
Ex.: ruler, caliper, micrometer, special microscope, graduated tape, etc.
In case for micrometer, principle of pitch is used. Least count could be even micro meter But in vernier caliper, difference of main scale division and vernier scale division is the principle Least count could be 0.02 mm
Calipers, of which there are many types, are used to measure thickness. The most common type is the Vernier Caliper.