Safety tapes are used in flagging applications or to mark an area’s perimeter. Reflective tapes are used in rotating or moving equipment to trigger proximity sensors, or enable a tachometer to make ...

A bit of thought led him to build a reflective sensor which can measure the spinning ... The pulley seen above has a piece of electrical tape on it. When this passes by the LED, less of the ...

The sensor hangs down just far enough to watch a reflector on one of the flats of the collet nut; we’d worry about the reflector surviving tool changes, but it’s just a piece of shiny tape ...