• Professional quality laser instrument for fast and accurate measurement of rotational speed with or without contact.
• Will also measure total revolutions, frequency, surface speed and distance.
• Ten selectable data set memories each with maximum, minimum and average or single value reading, as appropriate.
• Supplied with reflective tape, for non-contact measurement, and three heads for contact measurement.
• Powered by 9V battery (supplied) and has jack socket for 6V DC supply.