| 摘要 |
<p>A belt measurement device comprising a first portion and a second portion, the first and second portion are substantially parallel, the first portion and second portion defining a predetermined engagement position for the device in a belt, and, a switch cooperatively disposed with the first portion and second portion, the switch capable of closing a circuit by being compressed between a belt surface and the device, a light is illuminated upon the switch closing the circuit.</p> |
