... keep +/-0.01mm , high accuracy 5.Application: Precise equipments and instruments , electric industry etc. 6. Advantage:Precise products, innovative engineers, ... ,internal micrometer,mechanical caliper, vernier caliper ,caliper(digital),caliper(machine),caliper(dial),diameter scale, depth micrometer, digital caliper, altitude gauge, electric balance),2D measurement inspection instruments etc.etc.11 ...