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||Price Each: $34.99
Constructed with a low-friction ball bearing. Can be used to measure acceleration rate, velocity, distance traveled and time-traveled. Develop your own sensors and interface box. Wheel measures 2" in diameter. Rod measures 6" long. Mounting assembly has an area for placing a PC Board that measures 1.2" x 0.4" , several holes for LEDS, Opto sensors and passing cables. Requires assembly.