📌LAB POINTS ensures accurate rotational speed of your turntable comes w/ hand held strobe light w/ precision quartz-controlled circuit, more accurate than turntables' built-in strobes which rely on power line frequency quartz-locked illuminator w/ 99.99% accuracy desired speed is read directly from the disc speed range: 16, 33, 45 70-90 RPM batteries included "The KAB SpeedStrobe was designed to replace and improve upon older strobe designs that relied on power line frequency. We also wanted something that was easier to use and included the ability to actually measure small amounts of error. Not just a go - no - go - test. The KAB SpeedStrobe features a quartz locked illuminator with 99.99% accuracy. And since it is battery operated, it works everywhere. No need for 50 or 60 Hz versions. The Disc is silk screen printed on durable 20 mil PVC. Instead of hypnotic bars, the KAB SpeedStrobe features the actual speed numbers. In use, the desired speed is read directly from the disc. no searching for the right band. Covers 16.66, 33.33, 45, 70.59 - 90 RPM. By timing the drift of the display over one minute, accuracy can be measured to 0.03%." - KAB 📦COMES WITH 10" PVC stroboscopic disc handheld strobe light 9V battery .
