Five preset mechanical counter has two kinds, one is J250 --- 001, and there is a J250s --- 001, and such a cheap price. The same function, that is, a body is metal, a plastic, oh. J250 series of five mechanical preset counter rotating and pulling the two main sub-categories, suitable for controlling the rotation of the machine or instrument or stroke. Press the counter to the left of a button, it can be the desired value by successively pressing the rest of the five key input into the counter. Relax on the left button, the counter will show you the selected values. (In which the band preset, when the counter digital display to "00000", the counter sends a signal to control the machine or instrument to stop working) J250 series five mechanical preset counter is widely used in the printing, textile, printing and dyeing, knitting, cables, telecommunications, industry, light industry, machinery industry. It may be used alone or with test equipment, modern control equipment used in order to achieve quantitative control functions.