Handling the machine manually, use the additional speed switch (the handle multiplier), which can change the value of displacement equal to one skip on the scale of the hand-wheel.
人工操作机床，使用附加速度开关(手动倍率开关)能改变手动轮一个刻度的位移量。
2
Solenoid valve, handwheel, valve position switch, air filter regulator and so on.