Lock adjusting mechanism of two connecting rods and two optical wedge lock nuts of sighting telescope center (No. 7 in Fig. 1).
锁紧二连杆的调整机构和瞄准镜中部的二个光楔锁紧螺母（图1序号7）。
Wedge locking device and unidirectional ratchet device are mainly used abroad and wedge lock device is mainly applied in China.
国外主要以楔面自锁结构和单向棘齿结构为主，国内主要以楔面自锁结构为主。
Wedge locking device and unidirectional ratchet device are mainly used abroad and wedge lock device is mainly applied in China.
国外主要以楔面自锁结构和单向棘齿结构为主，国内主要以楔面自锁结构为主。
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