【Important Note】This Signal Pickup needs to be used with multimeter or oscillograph for tach RPM measurement for vehicle engine. It's recommend to use it with BTMETER BT-770K, BT-90K, BT-6688D automotive multimeter.
【Great Companion to Automotive DMMs】 Features with standard 3/4 inch banana plugs, which means makes it compatible with most automotive meters that features with signal input.
【Inductive Pickup Leads for BT-770K BT-90K】Perfectly work with BTMETER automotive multitester, such as: BT-770K, BT-90K, BT-6688D. To measure secondary end conductors of high voltage ignition coil spark .
【Easy to Use】Clamp the spark plug wire with the mark ”→“ on the inductive pickup tool pointing to the spark plug for engine speed measurement.
【Notice in Measurement】The distance between the spark plug and the clamp of the instrument must be less than 3.93 inch (10cm) during test, and the ignition frequency of the engine ignition system must be between 10Hz and 400Hz
