Martindale CM57 600 A 600 V AC/DC Auto Ranging True RMS Clamp Meter

Martindale CM57 600 A 600 V AC/DC Auto Ranging True RMS Clamp Meter


The Martindale CM57 is a pocket-sized high-performance AC clamp meter that is capable of measuring AC current, AC/DC voltage, resistance with continuity test, capacitance, frequency, and diode test. Its compact and rugged design allows for accurate and reliable current measurement without the need to break into the circuit.


– Thumbwheel for single-handed operation
– Auto ranging for ease of use
– Auto power off and low battery indicator
– High contrast backlit display with hold function for working in low light and hard to reach areas
– Smart function that automatically detects and switches between resistance and capacitance measurements
– CATIII 600 V safety rating
– Non-contact voltage sensor built into the jaw for detecting the presence of AC voltages


– Auto ranging 60.00 A and 600.0 A AC
– AC/DC voltage measurement up to 600 V
– Resistance measurement up to 6 MΩ
– Smart sense capacitance measurement up to 600 μF
– Frequency measurement
– Non-contact voltage sensor


The Martindale CM57 offers several benefits that make it a valuable tool for professionals in various industries. Its pocket-sized design allows for easy portability, making it convenient for on-the-go measurements. The auto ranging feature eliminates the need for manual range selection, saving time and effort. The high contrast backlit display with hold function ensures accurate readings even in low light conditions. The non-contact voltage sensor adds an extra layer of safety by detecting the presence of AC voltages without the need for direct contact.

Frequently Asked Questions

1. Can the Martindale CM57 measure DC current?
– No, the CM57 is designed for AC current measurement only.

2. Does the clamp meter come with test leads?
– Yes, the CM57 comes with test leads for voltage and resistance measurements.

3. Can the CM57 measure temperature?
– No, the CM57 does not have a temperature measurement function.


In conclusion, the Martindale CM57 is a versatile and reliable AC clamp meter that offers a wide range of measurement capabilities. Its compact size, ease of use, and safety features make it an ideal choice for professionals in the electrical and electronics industry. Whether you need to measure current, voltage, resistance, capacitance, frequency, or detect AC voltages, the CM57 has you covered.