The Extech 461995 Combination Laser Photo Surface Speed Contact Tachometer blends laser, photo, surface-speed, and contact tachometer measurement modes in a single instrument for speeds on rotating parts and moving surfaces. It provides non-contact speed readings via laser or photo methods and also includes a contact option for direct shaft measurements. Suitable for maintenance, manufacturing, and quality-control work, it enables choosing the most practical measurement method for the task at hand.
