The SRPM1 optical laser tachometer is a stand-alone, battery-operated device that senses the passage of reflective markings on a rotating fan or shaft in order to determine the target's rotational rate. The company says field technicians can measure rpm from up to 4 feet away from a rotating fan or shaft. When the laser is pointed at the included reflector strip, the three-digit LCD display indicates the rpm.

Fieldpiece Instruments Inc., 580 West Central Ave., Ste. A, Brea, CA 92821; 714-257-9060; 714-257-9069 (fax);;

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