Feature: 1. Wear‑resistant needle roller bearings and stainless steel shafts, provide accurate quality. 2. The operation of the reset button on the large handle is simple and convenient. 3. Adopt ultrasonic welding is waterproof and dustproof, have clear writing and presentation of figures. 4. Counter is capable of recording 99999.9 meters, and the maximum counting speed is 360 round / min. 5. Used to measure length and various mechanical transmissions, generally used to record the length of textiles, printing and dyeing, plastic film, artificial leather, etc. Specification: Item Type: Mechanical Length Counter Material: ABS and rubber Counting Range: 0-99999.9Meters Ambient Temperature: -15℃-55℃ Use: Used to measure length and various mechanical transmissions, generally used to record the length of textiles, printing and dyeing, plastic film, artificial leather, etc. . Package List: 1 x Mechanical Length Counter2 x Roller Note: The screw is not easy to be too tight to prevent the casing from fracturing and affecting the measurement accuracy.