How Speedometers Work: VIDEO/DVD, Cars, motorcycles, and bicycles use speedometers to measure their rate of speed, but how do they work? Bob Symes looks inside an ordinary bicycle speedometer and explains how a rotating magnet and a metal cup make the speedometer’s needle move.


			How Speedometers Work

Cars, motorcycles, and bicycles use speedometers to measure their rate of speed, but how do they work? Bob Symes looks inside an ordinary bicycle speedometer and explains how a rotating magnet and a metal cup make the speedometer’s needle move. (8 minutes)

ORDER CODE: FFMBVL1653V
VHS VIDEO

ORDER CODE: FFMBVL1653DVD
DVD