The Fluke 810T noncontact tachometer attachment measures from 6 to 99,999rpm with accuracy to +/-0.05%, uses a laser beam, and has a 50cm cable. This noncontact tachometer is for with the Fluke 810 vibration tester, to measure the speed of motors, conveyor belts, and other moving and rotational systems. It measures from 6 to 99,999rpm with accuracy to + or - 0.05 percent. Its optical sensor is a laser beam that works at a distance of 1 to 100cm for user safety. Its integral 50cm cable connects the tachometer to the vibration tester for power and measurement data recording. It carries the CE mark to indicate compliance with applicable EU directives. This tachometer is suitable for measuring rotational speed in conjunction with vibration testing in mechanical or industrial engineering environments.Tachometers measure the rate of rotation or surface speed of motors, conveyor belts, and other moving systems. Contact tachometers take measurements through direct contact with the moving surface, and can measure both rpm and surface speed. Typically, contact tachometers come with a range of attachments that can be used to measure speed on different kinds of rotary systems, which may include tips used for measuring shafts with a central hole or flat end surfaces, and rotary wheels for measuring conveyor belts. Noncontact tachometers take measurements from a distance using a beam of infrared light, and provide highly accurate measurements. Contact tachometers are an excellent choice for dirty and dusty environments; noncontact tachometers only calculate rpm but are considered safer because they do not require the operator to be in close contact with the moving surface. Contact/noncontact tachometers, also known as dual, or combination tachometers, can be used to take contact and noncontact measurements. Some tachometers can also take other types of measurements, such as count or frequency, while others can output data to a computer for analysis. Tachometers are used in applications such as automobile maintenance, mechanical engineering, and maintenance of industrial equipment.Fluke Corporation manufactures electrical testing tools and software for industrial and commercial applications. The company, founded in 1948, is headquartered in Everett, WA.