Shooting Chrony F-1 Chronograph (green)A Shooting Chrony chronograph can measure velocities for airguns and firearms, including powerful firearms.•F-1 CHRONY - The very first model and still the most popular. Provides numbered shots and velocities plus high, low and average velocities of the string.• All Chrony models are powered by a single 9V battery and can be easily attached to a 1/4-20 tpi camera tripod for... More
