An electronic tachometer is a straightforward enough device, in which the light reflections from a white spot on a rotating object are detected and counted over time, measuring the revolutions per ...

This digital DIY tachometer for bikes uses two reed switches to get the speed information of the bicycle. The reed switches are installed near the rim of the wheel where permanent magnets pass by. The ...

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 ...

ServoTek Products Inc. announced the successful application of its TachSyn Series brushless DC tachometer/commutator within industrial motor speed monitoring applications. The high-accuracy TachSyn ...

Dear Car Talk: I have a new 2017 Honda Ridgeline. The speedometer is digital; it shows numbers only. It has no dial. However, it still has an analog tachometer. The transmission is an automatic ...