The PCE-VT 204 is a multifunction handheld tachometer with the ability to accurately measure both rotation and vibration. An ideal tool for the testing and inspection of machine parts and components such as motors, transmissions, gears, gear boxes and wheels, this multi-purpose device measures revolutions per minute (RPMs) as well as three-axis vibration, i.e., speed or velocity, displacement and acceleration. - Vibration measurement: velocity or speed, acceleration and displacement - RPM measurement: contact / mechanical and noncontact / optical - Internal memory for up to 1000 readings - Min / max and data hold functions - RS-232 port