Free Falling Science Instrument (J2153-2) Brand New In The Box Approx 4feet High

Description

Free-Falling Gravity Acceleration Instrument J2153-2.
It can be applied to do qualitative and quantitative analysis when observing the freely falling state of objects with digital timer.
Specification:
Height: 1.2m
Electromagnetic power: DC 5V
Steel ball diameter: 12mm
Experiment error: ≤1%