The plt200 laser handheld tachometer is a battery powered functional handset for taking speed impulse counting totalling and time measurements the class 2m laser sensor allows accurate measurements up to a speed of 200 000 rpm the impulses are recorded using a corresponding reflex tape an internal memory enables the detection of the speeds maximum and minimum value for example a number of items or the number of revolutions of the shaft can be measured using the summing function an input