The HTJ-16 Automatic Backlash Angle Tester Product Operation Manual of Changsha Xinxiong Instrument Technology Co., Ltd., this instrument is mainly used to test the backlash of conductors with a nominal diameter of 0.080 mm or above 1.600 mm and below lacquered round wires. The high-end single-chip microcomputer is controlled, the running speed is fast, and the anti-interference ability is strong. The winding 5 laps stops automatically. Various size samples do not need to adjust the sensor. When the backlash, the coil slowly loosens, without sudden backlash or sudden jump, the LED automatically records and displays the test results, and the display value and the scale plate indicate the error is not more than ±1°. The operation is simple, the sensitivity is high, and the repeatability is good.