| 摘要 |
Provided is a measuring device 1 for measuring the size of an object comprising a body 2 , and a spindle 3 which is screwed into the body 2 and axially advances and retracts by screwing with respect to the body 2 , the measurement being based on the axial displacement of the spindle 3 effected by the revolution of the spindle, wherein the spindle is screwed into the body 2 via a multiple-start thread 31 . Therefore, it is possible to displace the spindle 3 at a high speed, which improves the operability of the measuring device.
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