... method: engine electromagnetic induction Laser reflective Measuring range:30-600mm Resolution:0.1/1 MULTIFUNCTIONAL ENGINE TACHOMETER GED-2600Application: ... 1,2,3,4,5,6,8- cylinderMeasurement range: engine 100-20000r/min Laser 2.5-99999r/ ... electromagnetic induction Laser reflectiveMeasuring range: 30-600mmResolution:0.1/1Operating conditions: 0-+45(32-104),≤90%RHAccuracy: ±(0.05%n+1d)Memory ...