Pro Chrono Pal

The ProChrono Pal accurately measures the velocity of almost anything that shoots at an economical price with its large shooting area and simple setup. Requires one 9 volt battery for operation. Everything is included for outdoor use. For indoor use, we recommend our optional Indoor Lighting System Velocity Range: 21-7,000 feet per second Temperature Range: 32-100 degrees Fahrenheit Size: 16 x 4 x 3-1/4 inches Battery Required: One 9-volt alkaline battery (not included) Mounting Hole Thread: 1/4 x 20 Guide Wire Size: 3/16 x 16 inches Memory Capacity: 99 shots Minimum Time Between Shots:Between 250 mSec and 500 mSec Shot Timing Resolution: 750 nSec Crystal Controlled Accuracy: +/-1% of measured velocity, or better Current Consumption: Approx. 15mA