With CNC machines, getting the best results depends on knowing how fast your tool is moving relative to the workpiece. But entry-level CNC routers don’t often include a spindle tachometer, forcing the ...

The battery-powered PLT200 portable optical tachometer uses a laser light source to operate up to 25 ft from a reflective target. The ergonomic design allows safe, direct line-of-sight viewing of both ...

Tachometry, the measurement of the speed of spin of rotating objects, is a common application. Some of those objects, however, have quirky aspects that make them extra interesting, even scary. One ...

The SRPM1 optical laser tachometer is a stand-alone, battery-operated device that senses the passage of reflective markings on a rotating fan or shaft in order to determine the target's rotational ...

[Jared] sent in this optical tachometer by [Mike Freeman]. The write-up and code requires a free registration, but if you’ve got a use for it, it’s probably worth the hassle. The zip archive includes ...