我厂试制成功的新型0～360°×5′不锈钢带表量角器,需要二种圆度分度精密的铝彩色刻度盘。该刻度盘任意两刻度线之间的误差要求不大于±5′,且又需要区域着色标志,一种中间为一绿色圆环,另一种为绿色扇形。曾去上海、无锡等地外协订货,均由于批量小、精度高、着色困难而遭谢绝。为此,我们借鉴本厂游标卡尺刻度的制造工艺 Our factory trial success of the new 0 ~ 360 ° × 5 ’stainless steel table protractor, you need two roundness index precision aluminum color dial. The error between any two tick marks on the scale is less than ± 5 ’, and the area coloring mark is needed again. One is a green circle in the middle and the other is a green fan shape. Had to Shanghai, Wuxi and other foreign aid order, are due to the small batch, high precision, coloring difficulties have been declined. To this end, we draw on the Vernier caliper factory scale manufacturing process