Laser Tachometer, RPM Accuracy +/- 0.05 Percent, RPM Resolution 0.001 RPM, Maximum Contact RPM 20, 000 RPM, Calibration Certificate Type NIST, Maximum Velocity Measured 6, 562 fpm, Minimum Velocity Measured 0.16 fpm, Includes 12 in of T-5 Reflective Tape, Timer, Totalizer, Features Auto Ranging/Fixed Decimal (User Selectable), English and Metric Rates, On-Target Alerts, Rubberized Housing, Tripod Mounting Bushing, TTL Pulse Output (Requires Optional 6-Foot BNC Cable). This item has been restricted from sale in the following state (s): []