With Locking Nut Yes. Make sure the jaws are clean and free from any dust or debris otherwise you wont get an accurate reading. Physics Measurements Errors In Measuring Instruments Measuring Instruments Microme Measuring Instrument Mechanical Engineering Design Engineering Tools A caliper is an instrument for precise measuring small distances between two opposite sides of an object or an internal dimension of an object as well as the depths of holes. . When a beam of light strikes a flat reflecting surface a part of the beam is absorbed and the other part is reflected back. Therefore the smallest reading on the main scale. In accordance with the ASME B89114 standard the conformance verification tests for E MPE and S MPE are described below. 50 divisions 002 mm. Repeatability 00005 in001 mm. Using the outside measuring faces conformance to E MPE is verified by measuring gage blocks a caliper. What are the t...