It is widely used to calculate the length of textile, printing, artificial leather, and similar materials. After 3 revolutions, the counting cannot be reversed, and the counting restarts after resetting to zero. It is equipped with 2 wheels for improved stability and accuracy of measurement. Product Name: Length Counter Model: Z96-F Counting range: 1-99999 meters Counting speed: 200 times per minute Color: black Material: metal + plastic Size: approximately 160mm in length Package Contents: 1 x Meter counter Only the above package content; other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3cm.