JC316 is a recorder of way and length. Especially it is applied on the way of turn up and down. It is a facile tool for measuring and recording. Also with Brake, model number is JC316A, the brake can easily uninstall if no need. Specification 1. Max counting capacity: 99999.9 2. Max counting speed: 360RPM 3. Environmental temperature: -15篊-+55篊 4. Precision of measurement:?9%