Testo 470 Handheld Optical Tachometer is a one-hand operated measuring instrument designed for quick and accurate detection of rotational speed, RPM, and length. Combining both optical and mechanical measurement capabilities. Digital RPM meter goes beyond standard tachometers by offering high accuracy, easy switching between contact and non-contact modes, and additional features such as memory storage for minimum, maximum, and mean values. Application: Industrial Maintenance, Machinery Diagnostics, HVAC Systems, Quality Control, Automotive Testing, Textile & Packaging Lines.