Stop Clock, 1A10.40b
Topic and Concept:
Measurement, 1A10. Basic Units
This stop clock can measure time with a accuracy of one one-hundredth of a second.
Important Setup Notes:
- This clock only has a momentary switch.
Setup and Procedure:
- Plug in the clock, standard 110Vac.
- Toggle and hold down the red switch to the right, to reset the clock.
- Toggle and hold down the red switch to the left, to measure the time interval.
Cautions, Warnings, or Safety Concerns:
The stop clock centisecond hand sweeps all the way around the face every second. It is capable of measure up to one minute in 100th of a second increments. The clock can help demonstrate what a second is.