Uni 3220 _hot_ Here

You stick a small piece of reflective tape (included in the box) onto the rotating object. The laser shines at the tape. Every time the tape passes the laser, the sensor counts one rotation. In one second, it knows exactly how fast the shaft is spinning. Step 1: Prep the Target Cut a 12mm square of the reflective tape and stick it to the rotating surface. If the shaft is black or dark, the reflection works best. For shiny metal, you may need to put a piece of black tape down first, then the reflective tape on top.

Press the red "Measure" button to turn the unit on. Ensure the LCD screen shows "LASER" on the left side. uni 3220

Disclaimer: Always wear appropriate PPE when working around rotating machinery. Remove loose clothing and jewelry. You stick a small piece of reflective tape