Micro-controller based design with world class Indian software.Non-contact sensing through reflected light beam on reflective sticker.LCD displayInput sensing indication through LED.Memory facility to retain measured value.Portable, lightweight, strong and elegant ABS enclosure.Accuracy: 1RPM up to 5, 000 RPM and 0.05% of the reading above 5,000 RPM.Resolution: 0.1RPM up to 5,999 RPM and 1RPM at and above 6,000RPM.Calibration certificate provided along with tachometer - traceable to national and international standards.Dimensions: Over-all: 72 X 170 X 38mm (W X H X D)Applications: Motors, Pumps, Generators, Engines and many more