Introducing the RS PRO RS AT-8 dual-purpose Tachometer, a professional and high-quality laser tachometer (digital rotary measuring instrument) designed with the latest measuring technologies in mind. Built with a durable and robust housing, this tachometer allows for fast and accurate contact and non-contact measurements of RPM and surface speed. The ergonomically designed body makes it a comfortable device to use at any location and the backlit LCD screen makes it easy to read measurements, even in low light conditions. This RS PRO dual-purpose laser light tachometer with contact accessories is a must-have device for any user working in close distance to high-risk machines or where the access is restricted, while the contact accessories provided allow the device to be used in a wide variety of applications where contact measurement is required.

A tachometer or revolution counter is a tool that is used to measure the rotation speed of an object. These devices often measure in RPM (Revolutions Per Minute) units, which measures the frequency of the rotation and would be most familiar alongside a speedometer in a car. This tool is important in the implementation and day to day operations and maintenance of machinery and systems and it is also beneficial for use in research and development laboratories. Tachometers are typically used for measuring:

• The speed of rotating equipment such as engines, turbines, fans, wheel, shafts, rollers


• Travelling speed of belts and conveyors


• Length of long products such as wire, fibre, steel, wood, etc.


• The speed of travel and length of sheet products such a films and foils

Yes, the tachometer is supplied with a 9V battery

The tachometer's optical sensor uses a beam of laser light to measure the speed of rotation of the wheel or shaft by using reflective tape or mark as a control target. It measures differences in frequency of the reflected light.

Yes, the unit can be calibrated to RSCAL or ISOCAL standards and can be found here:

193-8951 RSCAL
193-8949 ISOCAL

RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.