About this item:
This convenient free fall apparatus for measuring the acceleration of gravity has a 150cm fall length.
It includes an electromagnetic ball release, a pair of photogates on a long cable harness, two steel balls, a plumb line, and a catcher. 
Requires the digital timer DTPHG1 (not included). More detailed descriptions are available upon request. Includes activity guide.
 
Shipping weight of FFA001: 5 Lbs., Dimensions: 75" x 6" x 7".