Extech 461950 Panel Mount Tachometer

Test-meter.co.uk

Precision panel-mount tachometer measuring 5-99,990 RPM. Quartz crystal accuracy ±0.05%. 4-digit LED display. Proximity/photoelectric sensors. 115/230 VAC. Tracks rotational speeds with high-resolution settings.

Amazon

Continuous and accurate readings from 5 to 99,990rpm Measure rpm from 5 to 99,990rpm with microprocessor quartz crystal accuracy of 0.05-percent Large LED display updates 1/sec (rpm