B472 Precision Light Screen

The B472 precision light screen can be used in the calibre range from 4 to 40 mm.
It is basically designed for use in indoor shooting ranges, but can also be used outdoors or in covered facilities in dry conditions.

Determining projectile velocity (v) by measuring the time (t) required to travel a known distance between two sensors has been a tried and tested method for some time.
 Chronographs with a resolution of 0.05 µs now represent the state of the art.