1.圆形百分表主体 Round mechanical body. 2.表圈转动圈为金属外圈 Adjustable steel dial ring. 3.带表圈紧固装置 With dial locking screw. 4.带缓冲装置能较好地缓解量杆快速下落对机芯的冲击 With elastic buffer device inside to protect indicator from shock damage.
