Here you will find a selection of distinct rotation meters. There are different ways of measuring revolutions within the industrial sector, either optically or mechanically. The PCE-151 handheld series rotation meters with RS-232 interface can measure revolutions and velocity and store the readings onto a computer using software which comes with the device. Handheld digital rotation meters are ideal for measuring velocity and revolutions in research and maintenance. The PCE-T236 measures velocity both by contact and non-contact and has a good relation between price and quality. Non-contact measurement of velocity is done with the help of reflective tape. For a device that can be installed for measurements over a period of time, we recommend the PAX I.