Chronographs

Xcortech X3200 MK3 Handheld Computer Airsoft Chronograph Features: Measures muzzle velocity from 30 m/s ~ 400+ m/s (90 fps ~ 1200+ fps) ROF range: 100~5000RPM Calculates muzzle kinetic energy from 0.01~999 joule High quality DOT Matrix backlit LCD...