The Tekneka T4490 digital contact/non-contact tachometer measures from 0.5 ~ 99,999 revolutions per minute (RPM) using both contact and non-contact methods. It includes a crystal time base and microprocessor LS-I circuit for improved measuring speed and accuracy. The T4490 boasts good resolution and a wide measurement range. It also saves the most recent, minimum, and maximum values for future use. It has an automated power-off mode that increases battery life and is powered by 4 x 1.5V AA batteries. This tachometer is designed for long-lasting use with a sturdy ABS plastic casing. FEATURES ● Contact and non-contact RPM measurements with quick response time● Improved measurement time and accuracy● Low RPM measurement can be achieved with reflective markings● The memory button can save the most recent, minimum, and maximum values● Microprocessor LS-I circuit for maximum precision and quick reaction● Units can be switched to m/min & ft/min by sliding the switch button● The device is easy to hold in one hand and is simple to operate APPLICATIONS ● Widely used by mechanics, racing teams, vehicle manufacturers, power plant operators, electrical engineers, HVAC technicians, building engineers, ship engineers, shipyard operators, and aircraft maintenance technicians. PACKING INCLUDES ● 4 x Contact End Fittings● Reflecting Tape● 4 x 1.5V AA Batteries● User Manual● Carrying Case
