Patent ID: 8091251

Claim:
A high-speed measuring electronic digital outside micrometer comprising: a linear motion digital sensor, a linear scale digital sensor, a linear motion digital sensor base, a digital display unit, an electronic processing unit, a micrometer body, a linear spindle with a measuring surface, a spindle linear movement unit, a spindle control unit, a micrometer anvil with measuring surface, and a retractable spring; while in stationary position, the measuring surface of the micrometer anvil and the linear spindle are in closed contact to each other; by operating the spindle control unit, said spindle control unit will create a distance between the micrometer anvil and the linear spindle measuring surface; wherein said distance is a measurable distance of the micrometer, thereby displayed on said digital display unit; by setting free the spindle control unit, the retractable spring will re-set said micrometer to its stationary position whereby reading on said digital display unit displays “0”.