It can be widely applied to instantaneous speed, acceleration, regular speed measuring experiments to verify mechanic laws with digital timer using together.

Specification:

Usable length: 1.2m, 1.8m

Linearity error: ≤0.1mm in full length

Atmospheric pressure of source of the gas: ≥5.8Kpa

Working temperature: 0~40℃, Relative humidity: ≤85%