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Introduction
Congratulations on your purchase of the Extech 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. Careful use of this device will provide years of reliable
operation.
461895-EN V2.1 8/13
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