| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a measuring device capable of simply and accurately measuring a relative positional relation of a measuring surface for a reference plane and light in weight due to a simple structure and extremely slight in accuracy deterioration caused by repeated use over the years.SOLUTION: A measuring device 1 measures a distance by stretching a wire 2 from a reference point P to a measuring point Q, and includes: a housing 3 in which a wire 2 is stored with a top end in a deliverable way; a drum in which the wire 2 is installed inside the housing 3 in a windable way; detection means for detecting the number of rotations of a drum installed inside the housing 3; an attachment 9 installed on the reference point P; a hook provided on a top end of the wire 2 so as to abut against the attachment 9; an attachment 10 installed on the measuring point Q; and a circular opening 11 provided on the external surface of the housing 3 so as to abut against the attachment 10.</p> |
