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Jumbo 5-digit LCD displayAuto-rangingWide measuring rangeLaser PrecisionMemory: Min/Max/LastIncludes reflective tape, hard carry case, batteries and user manualSPECIFICATIONS:Measurement Range: 2.5 to 99,999 RPMAccuracy: ±0.05% + 1 digitResolution:0.1 RPM (2.5 to 999 RPM)1 RPM (over 10,000 RPM)Sampling Time: 1 secondPower Source: 3 AAA batteries (included)