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Photoelectric Tachometer Laser Tachometer Digital Tachometer Laptop Stands after use should be andTimeTurnShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Introduction: Can be used in motor, fan, paper, plastic, chemical fiber, washing machine, automobile, aircraft, ship and other manufacturing industries Product introduction basic function Photoelectric rotation speed Product modelDT 2857 measuring range : 2. 5 99999turn branch Photoelectric distance measurement50 600mm Accuracy:(0. 05%n+1d) branchResolution0. 1 1 Memory