Ⅰ. Digital Laser Tachometer - High-Accuracy RPM Measurement Upgrade your measurement capabilities with this tachometer for accurate and efficient measurement of revolutions per minute (RPM) of an engine or other rotating object. The device features high resolution, an extremely wide measurement range (2.5-99,999 RPM) and a high ±(0.05% + 1 digit) accuracy. Ⅱ. Main functions Ⅲ. Sturdy plastic construction: made of plastic, impact-resistant and suitable for use in a variety of conditions. Ⅳ. Wide measurement range: 2.5–99,999 rpm – suitable for both small appliances and industrial motors. Ⅴ. Accurate results: ±(0.05% + 1 digit) accuracy guarantees reliable data recording. Ⅵ. Laser distance measurement: up to 500 mm (20 inches) – allows you to safely measure without touching the object. Ⅶ. Memory functions: automatic storage of minimum, maximum and last measured values. Ⅷ. Easy to use: ergonomic, lightweight, one-handed operation, with non-slip and anti-static coating. Ⅸ. Simple operating principle: place reflective tape on a rotating object, aim the laser and measure. Ⅹ. Technical specifications: Parameter Meaning Material Plastic Screen 5-digit LCD, 18 mm (0.7 in.) Measuring range 2.5-99,999 RPM Resolution 0.1 RPM (2.5-999.9), 1 RPM (>1000) Accuracy ±(0.05% + 1 digit) Detection distance Up to 500 mm (20 in.) Power supply 9V battery (6F22, not included) Energy consumption About 35 mA Ⅺ. Package: 1 x Tachometer 3 x Reflective strips 1 x User manual 1 x PU storage case Ⅻ. This tachometer is suitable for both professional use in workshops or industry, as well as for enthusiasts working with mechanics or electronics.