Use the 505 photo / contact tachometer to determine RPM and surface speed. The 505 is a combination photo and contact tachometer that also measures surface speeds of belts and wheels.

Non-contact (photo/optical) and contact RPM and surface speed Wide Measuring Range: 0.5 to 30,000 RPM Last measurement, maximum measurement and minimum measurement automatically saved and recalled Measure motor input and output shaft speed Determine conveyor belt speed Confirm fan, motor, and gear RPM Measure RPM of flywheels and pumps Monitor pulley rotation RPM and turbine speeds