Technical Data:
Series: 982
Model: PH-100A
Revolution range: 1.0 - 25,000 rpm
Measuring accuracy, revolution: 1.0 - 599.9 rpm +/-1 rpm; 600.0 - 25,000 rpm +/-0.006% and +/-0.5 digit
Measuring accuracy, surface speed / length: +/-0.4% and 1 digit
Detection: Optical coupler, 20 pulses per revolution
Mass: 170 g
Power: 3 x AA batteries

Content:
NIST certification
Plastic carrying case

Dimensions:
4.83 in L x 2.52 in W x 1.24 in H (122.5 x 64 x 31.5 mm)