User Manual
461995 V1.3 7/02 
3 
Specifications 
General Specifications 
Circuit 
Custom one-chip LSI microprocessor circuit 
Time base 
Quartz crystal 4.194 MHz 
Display 
Reversible 5 digit 0.4" (10mm) LCD display 
Laser light source 
Less than 1mW; Class 2 red laser diode (645nm approx.) 
Detecting Distance 
2 to 79" (50 to 2000 mm) depending on ambient light and RPM 
Memory 
Last reading and MIN/MAX readings 
Operating Conditions 
32 °F to 122 °F (0 °C to 50 °C); RH 80% Max 
Power Supply 
4 x 1.5 V AA batteries 
Power Consumption 
20mA DC approx. 
Weight 
10.6oz. (300g) including battery) 
Size 
8.5 x 2.6 x 1.5" (210 x 67 x 38 mm) 
Accessories 
(4)1.5V batteries, reflective tape 24" [600mm], surface 
speed/rpm rotating attachments, and carrying case 
Range Specifications 
  Range   Resolution  Accuracy (%rdg) 
Photo 
Tachometer 
10 to 99,999 rpm  0.1 rpm (<1000rpm) 
1 rpm (>1000 rpm) 
Contact 
Tachometer 
0.5 to 19,999 rpm  0.1 rpm (<1000rpm) 
1 rpm (>1000 rpm) 
± (0.05% + 1d) 
Surface 
Speed 
0.2 to 6560 ft/min  0.1 ft/min (<1000ft/min) 
1 ft/min (>1000ft/min) 
Surface 
Speed 
0.05 to 1999.9 m/min  0.01 m/min (<100m/min) 
0.1 m/min (>100 m/min) 
± (1% + 1d) 
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com 






