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Track record / Track record

Track record
Track record

We usually use a tape measure marking time, more trouble. Also, the mark will be made ​​some errors, and do more marked still easy to forget. So I designed a digital sign can be labeled tape measure. When the user of the Colorado long tape measure, digital token device rotates to pull out of the distance, the digital tape device on hand to mark down one click, you do a number sign. There is no error, effort and easy.

University

Jiangxi University of Finance and

Jiangxi University of Finance and
Nanchang, China

Shouwu Huang,
Jiangxi University of Finance and