CM-1

Very rare Heathkit CM-1 Direct Reading Capacity Meter. Measures capacity in 4 selectable ranges. The unit's pilot light comes on when plugged in and the meter appears to be working when checking capacitors. The unit may need calibration. Selling as is for parts or restoration. A google search yields the following AI description: The Heathkit CM-1 is a vintage Direct Reading Capacity Meter. It was a popular tool for testing capacitors, particularly in the 1950s. The meter displays the capacitor's value directly in picofarads (pF) or microfarads (µF). It has a range switch and uses a 50µA movement. Purpose: The CM-1 was designed to accurately measure the capacitance of components. Function: It allows users to clip a capacitor to be tested between the binding posts and read the value directly from the meter scale. Accuracy: The CM-1 is known for its surprising accuracy and excellent operation. Limitations: The instrument only measures values up to 100,000 pF (100 KpF). Calibration: It requires calibration with known standard capacitors before use. Components: The CM-1 features a 6X5GT rectifier, OA2 voltage regulator, 6BX7GT oscillator, and a 50µA meter movement.

Price: $50.00