• Mass : 1.6kg
• Ranges : 0 to 9.999s10 to 99.99s100 to 999.9s1000 to 9999s
• Accuracy : ±0.01%
• Dimensions: 179 x 190 x 85mm

This timer is most suited for an investigational approach for students to gain a sound understanding of the concepts of time and motion. Two pairs of sockets alternately start and stop the timer, one pair operating in make mode, the other in break mode. The start/stop switches can be either mechanical or electronic. The timer is autoranging for ease of use and has a clear 13mm digital display.

Built into a robust metal case with a durable powder coat finish. An illuminated on/off switch is mounted on the rear panel adjacent to a fused appliance inlet.A document containing descriptions and diagrams of how to set up the 'g' by freefall apparatus and connect it to the Millisecond Timer is also included.

For use as a light operated timing gate. Comprises photodetector and light source each housed in a robust ABS case spaced 40mm apart on a plastic rod. Light source housing has battery compartment and on/off switch. Photodetector housing is fitted with a pair of 4mm sockets to allow connection to electronic timers. When the timing gate is switched on it creates a short circuit between the two output sockets, this then becomes an open circuit each time the light beam is interrupted. Consequently the timing gate can be used as a remote switching device in a wide range of dynamics experiments.