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FEATURES * Anemometer, Temperature meter, two in one, professional. * Anemometer unit : m/S, Km/h, FPM, mph, Knot. * Temperature measurement with ℃, ℉ unit. * Vane anemometer, available for air velocity measurement, high reliability. * Two display show air velocity and temperature value at the same time. * Bright LCD display. * Microprocessor circuit ensures high accuracy and provides special functions and features. * Records Maximum and Minimum readings with recall. * Auto power off saves battery life. * Operates from DC 1.5V ( UM4/AAA ) x 4 PCs batteries. * Low-friction ball vane wheels is accurate in both high and low velocities. * Durable, long-lasting components, enclosed in strong, compact ABS-plastic housing.

FEATURES * High precision gasoline engine RPM measurement, measurement just clamp the Inductive Pick Up sensor to the high tension wire. * Secondary tach. measuring method, no matter what cylinder is. * 4 cycle & 2 cycle select switch, available the automobile engine, motorcycle engine, generator engine... * 0.05% accuracy, high precision. * Wide measuring range from 10 to 50,000 RPM. * Separate inductive pick up sensor. * Memory the last value, max., value, min. value. * Used the exclusive one chip Micro-Computer LSI circuit, crystal time base. * Durable housing case.