Vaiseshika Electron Devices manufactures Digital Tachometer. Vaiseshika Electron Devices Quality Management System is ISO 9001:2000 compliant. The Digital Tachometer of Type: 9048 allows the user to measure the exact rotation velocity of a rotating part in an easy, accurate and safe way. The instrument allows four different measurement methods, to be realized by plug-in on mechanical adaptors. The Tachometer allows the selection of modes via a push button for revolution, speed and length measurement in various, international units. Reflectors are attached to the object being measured during optical measurement. The visible, red modulated light beam is directed on the reflector.