A circular arc fixed plate has the Angle scale, and one side of the circular arc fixed plate is prolonged as the caliper head which provided with two cylindrical pins.
圆弧形固定板有角度刻度，并将一边延长作卡尺头，上边装有两个圆柱销。
A circular arc fixed plate has the Angle scale, and one side of the circular arc fixed plate is prolonged as the caliper head which provided with two cylindrical pins.
圆弧形固定板有角度刻度，并将一边延长作卡尺头，上边装有两个圆柱销。
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