Check the listing for details. Monarch Phasar LCD Portable Tachometer RPM Test Instrument. Condition: New – Open box. Listed at 179.99 USD. SpecificationsThis product is designed for indoor or outdoor use under the following conditions (per IEC61010-1): Speed Range: 5 RPM to 100,000 RPMAccuracy: ± 1 RPM or .01% of readingResolution: 1 RPMDisplay: 6-digital 0.45" high liquid crystalDisplay Update: Twice per secondOn-Target Indication: Target (Bullseye) on lower left of displayOperating Distance: Range: 1 inch [25.4 mm] to 3 feet [0.9 m] for LCD models and up to 10 feet [3.1 m] for Laser equipped models from leading edge of reflective tape. Angle: Up to 45° from perpendicular to leading edge of reflective tape.Power-On Switch: Pistol grip trigger - may be locked on with latching push-button for longer duration measurements. Auto hold of last measurement for 90 seconds. Optical System: Visible light source - incandescent lamp or laserLaser Power: