ProChrono Plus Chronograph

ProChrono Pal Chronograph - basic chronograph features number of shots, average velocity, high velocity, and low velocity.  Velocity range: 22-7000 feet per second; temperature range: 33-100 degrees Fahrenheit;  size: 16x4x3-1/4 inches;  power requirements: one 9 volt alkaline battery (not included); mounting hole thread: 1/4x20 inches; guide wire size: 3/16x16 inches.  Options available:  Indoor lighting setup for indoor use, and extra diffusers for bright sunny days.