INSTRUCTION MANUAL
English / Espanola
Model 461895
COMBINATION CONTACT/PHOTO TACHOMETER
1. INTRODUCTION
Congratulations on your purchase of Extech's Combination Contact/Photo Tachometer,
Model 461895. The combination tachometer is a patented design providing contact and
non-contact RPM measurements. In addition, linear surface speeds can be measured in
ft/min. or m/min.
Features
• Use of an exclusive micro-computer LSI-circuit and cry
stal time base offers high 0.05%
accuracy
and
fast measuring time
• RPM measurements span wide ranges: 5 to 99,999 RPM for photo tachometer and 0.5
to 20,000 RPM for contact tachometer
• Suppression of insignificant zeroes in large, 5 digit LCD display provides exact RPM
while saving battery power
• Last value and last max/min readings can be automatically stored and recalled
Extech 461895 Combination Contact Photo Tachometer
Extech 461895-NIST Combination Contact Photo Tachometer
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