Digital Tachometer,Handheld Contact Photo RPM Tester with 4 Pcs Probe,Photoelectric 2.5-99,999 RPM, Linear Velocity Measuring (m/min,ft/min), High-Sensitivity Contact Drill Bit, for Motors,Fans

Digital Tachometer, Handheld Contact and Photo RPM Tester (2.5-99,999RPM), LCD Display, with 4 Pcs Probe, Linear Velocity Measuring (m/min,ft/min), for Motors, FansSpecifications:Name:Contact & Photo RPM TesterDisplay: 5-digit 10mm LCD screenMeasuring Range:Photoelectric: 2.5~99,999 rpmContact: 0.5~19,999 rpmLinear Velocity: 0.05~1999.9 m/min / 0.2~6,560 ft/minMeasuring Accuracy: ±(0.05%n+1d)Sampling Time: 1.0 second (below 60 rpm)Range Selection: Automatic switchingMemory Function: Automatically memorizes the maximum, minimum, and last measurement values ​​during the measurement periodEffective Distance: 50~150 mmPower Supply: 4 x 1.5V AA batteries (not included)Dimensions: 215 x 65 x 38 mmProduct Includes:1x Digital TachometerNotes:1. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement.2. If you have any questions please contact me and I will reply you within 24 hours

• Velocity Meter:Combines contact and non-contact measurement capabilities, featuring three interchangeable contact adapters to handle diverse applications with ease
• High Accuracy:Photoelectric: 2.5–99,999 rpm; Contact: 0.5–19,999 rpm; Linear speed: 0.05–1999.9 m/min (0.2–6,560 ft/min). Accuracy: ±(0.05%n+1d) with a fast 1-second sampling for low-speed measurements
• Clear LCD Display:Backlit LCD provides visibility in any lighting condition. Built-in memory automatically stores maximum, minimum, and last readings for convenient tracking
• Durable:Constructed from lightweight ABS plastic for portability, with an ergonomic grip ensuring comfortable use during extended measurements
• Versatile Applications:Ideal for measuring RPM, surface velocity, frequency, and linear motion in motors, fans, automotive components, and paper-processing equipment, suitable for both professional and DIY use