Met Police stopwatch -- outer casing

A Metropolitan Police issue stopwatch for the purpose of catching speeding motorists. This method worked on the principle of timing motorists over specific distances to estimate their speed. The same principle is still used today with modern speed enforcement equipment. The outer casing is engraved with a crown and the initials MP

Casing Catching Distances Enforcement Estimate Initials Measurement Method Motorist Motorists Speeding Stopwatch Timing

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