ball bearings measurement. micrometer screw gauge in human hand

accuracy adjustable background ball bearing blue blur calibrated caliper closeup component control copy design detail device digital display documentation drafting drawing education electronic engine engineering exactness gauge gray hand holding human industrial industry inspection instrument layout length machining manufacture measure measurement measuring mechanical metal metalwork meter micro micrometer micrometre millimeter number part person plan precise precision production professional project quality repair roller rolling round scale scheme screw service size sketch space spare steel study technical technology tolerance tool white