School Stop Clock-Specifically designed for use in schools. This highly accurate quartz stop clock is housed in a robust ABS casing. The two buttons are large and colour coded for clarity. The liquid crystal display is also large and clear. The unit can be used with remote switches, timing gates etc via the 4mm sockets which are located at the rear of the unit. Features: Capacity 59 hours, 59 minutes and 59 seconds .Resolution 1/100 seconds for the first hour and 1 second thereafter. Dimensions 95 x 90 x 75mm . Purpose built timer does not have to be reset when battery is changed .Simple start stop operation with split timing . Powered by one AA type battery .Labelled as a ‘School Stop-Clock’ to act as a deterrent against theft