Digital Handheld Stroboscope,Strobe Light Tachometer 60-49999 RPM Highly Accurate 0.001% Rechargeable LED Flash Stroboscopic Tachometer for HVAC Motor Engine Speed Tester Spectrum Analyzer

Monarch Nova-Strobe PBL LED Portable Stroboscope, with NIST Certificate of Calibration, 9" L x 3.66" W x 3.56" H

Monarch Nova-Strobe DBL LED Portable Stroboscope, with NIST Certificate of Calibration, 9" L x 3.66" W x 3.56" H

Fluke 820-2 LED Stroboscope