Handheld Contact and Photo RPM Tester,2.5-99,999RPM Digital Tachometer with 4 Pcs Probe, Linear Velocity Measuring (m/min,ft/min),Linear Tachometer with LCD Display,for feet per Second/Minute

2-in-1 Dual-Function Industrial Tachometers Supports contact/non-contact and linear velocity measurements, equipped with 3 different contact adapters to meet measurement needs in various situationsSpecifications: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

• 2-in-1 Dual-Function Industrial Tachometers: This Photoelectric contact speed tester integrates contact/non-contact RPM measurement and linear velocity measuring tool functions, equipped with 4 Pcs Probe (including 3 contact adapters) to meet diverse measurement needs of machinery equipment in various scenarios.
• High Precision & Wide Measurement Range: As a high precision rotational speed meter, it offers photoelectric RPM range of 2.5~99,999 rpm, contact RPM range of 0.5~19,999 rpm, and linear velocity measurements in m/min, ft/min, feet per second/minute (0.05~1999.9 m/min / 0.2~6,560 ft/min) with ±(0.05%n+1d) accuracy and 1.0s sampling time (below 60 rpm).
• Portable & Durable Design: This portable tachometer features a lightweight yet robust ABS plastic housing with an ergonomic design, ensuring comfortable grip and easy handheld operation—perfect for on-site testing of motor, fan, and other machinery.
• Clear LCD Display & Memory Function: Equipped with a backlit LCD Display, the digital handheld contact photo tester provides clear visibility in any environment; its built-in memory automatically stores maximum, minimum, and last measurement values for convenient data review.
• Versatile Applications for Machinery: This linear tachometer serves as a reliable motor fan gauge, ideal for measuring revolutions per minute (RPM), frequency, surface velocity, and length in equipment like motors, fans, automobiles, paper mills, and other industrial machinery—combining precision and practicality for professional use.