1417 Kit for measurement of short time intervals

With this kit it is possible to measure time interval between two occurences when time is too brief to be measured with a time marker. For example, oscillation time, or the time takes a body, to cover a specific distance, etc.

1 Timer and photocells (2pcs)
1 Metal rod 70 cm
1 Base
2 Bosshead
1 Linear ruler
1 Rod with hook
1 Spring
9 masses 10 g
2 Spheres for pendulum
1 String
1 Box