Buy a digital counter online. It has 6 digit display, frequency/rev/linear speed measuring function, DC 12V/24V external power supply, is perfect for
6-digit frequency counter. Measure up to 1 MHz signals.
6-Digit Frequency Counter
FUSION-C Large Digit Pulse Input Ratemeter, Counter Totaliser
Analog Stroke Counter Meter, Count Capacity: 999999, Model Name/Number: D94-S at Rs 399/piece in Rajkot
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Digital Counter JDM11-6H Display Electronic Industrial Counter DC 12V 24V 36V AC 110V 220V 380V Proximity switch sensor count
Pulse Counter: Used to record the accumulation of electrical pulse , and the counting range is 0-99999.9. High Accuracy: High in counting speed, the
Digital Counter Tool, 6 Digit Electromagnetic Counter Wide Application High Accuracy Quick Counting for Machine
Texas Ranger SRA-FC393 - Blue 6 Digit Frequency Counter
Digital Counter, 6 Digit, Frequency/Rev/Speed
DC 8-24V Digit Counter, 4 Digit LED Digital Display India
Tachometer PH-100A, Hand-Held Unit - Hans Schmidt