These stroboscopes feature a pistol-grip handle with a latching trigger and a 1/4–20 threaded bushing for extended “hands-free” tripod mounting. High flash energy allows measurements in bright areas. Select standard or phase—shifting models according to your application. Standard Digital Stroboscopes Stroboscopes feature an LCD readout of flashes per minute (fpm), x2 and ÷2 capacity for distinguishing actual rpm from harmonic frequencies, a memory for six flash rates, a recall function for last flash rate, and an external input and trigger output for remote synchronous operation. What’s Included: a 6-ft (1.8-m) power cord (115 VAC models include plug only) (115/230 models include battery recharger), and an NIST-traceable calibration report supplied by the manufacturer.