Question

What is the uses of speed gun?​

Answer 1

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There was a need of a device which can calculate the target's velocity in order to enforce vehicular speed limit. RADAR gun was the first device which was invented to calculate the target's velocity. RADAR guns are replaced LiDAR guns as LiDAR guns gave more accurate results than RADAR guns

Answer 2

Answer:

A radar speed gun (also radar gun and speed gun) is a device used to measure the speed of moving objects. It is used in law-enforcement to measure the speed of moving vehicles and is often used in professional spectator sport, for things such as the measurement of bowling speeds in cricket, speed of pitched baseballs, and speed of tennis serves.