Usage: 1 Clamp the rope clamp, loosen the ferrule and adjust the rope to the required length.
2. When the handle with counter jumps forward, hold it with the right hand and the number rotates forward. Hold the handle tightly and shake it horizontally, so that it can rotate flexibly and freely.
3. Return to zero, press the return to zero key, and relax when all the words appear at zero.
The counter consists of a basic counting unit and a control gate. It is an instrument that counts the number of pulses in a digital system to achieve the functions of measurement, counting and control, and also has the function of frequency division. Counters are divided into binary counters and decimal counters according to the carry system. According to the different operation functions, it is divided into addition counter, subtraction counter and reversible counter (also known as two-way counter, which can count both addition and subtraction).