| 摘要 |
A device for establishing an outside circumference identification for V-belts. The device includes two semi-cylindrical members reciprocally separable from each other along a stick which has its length divided into a plurality of scales. An arcuate stepped reference on one of the members provides means for gauging the top width of a plurality of V-belts. A pointing means in cooperation with the stepped reference indicates a circumference or specified belt identification on the scales.
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