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I would use a micrometer. A caliper would do as well.
Micrometer to measure the accuracy of 0.01 mm. Caliper to measure with accuracy of 0.1 mm is used.
Caliper. Micrometer
A vernier caliper would be a good way, unless you need a more accurate measurement, in which case I might use a micrometer caliper.
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.