应使量杯的主刻度线在量杯线路上至少延伸四分之三并对其编号。
The main graduation lines shall extend at least three quarters of the way around the graduate and shall be numbered.
转动主罗经刻度盘到分罗经同一示度，然后装上同步机。
Turn graduated disc of main gyro compass to comply with the graduated disc of Repeaters. Then install synchro.
其实质是该磨钻头活动卡规是由主卡规和副卡规构成，卡心角与被卡钻头的锋角心位于同一条轴心上并在其卡规上设有指示刻度。
A clamping center Angle and the sharp Angle center of the clamped drill are positioned on the same shaft center, and the gauges are provided with indication graduations.
其实质是该磨钻头活动卡规是由主卡规和副卡规构成，卡心角与被卡钻头的锋角心位于同一条轴心上并在其卡规上设有指示刻度。
A clamping center Angle and the sharp Angle center of the clamped drill are positioned on the same shaft center, and the gauges are provided with indication graduations.
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