Milwaukee 2238-21NST CLAMP-GUN™ M12™ Cordless Clamp Meter Kit for HVAC/R (NIST Certified)

- Item #: BCI1712762

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CLAMP-GUN™ M12™ Cordless Clamp Meter Kit for HVAC/R (NIST)

The CLAMP-GUN™ M12™ Cordless Clamp Meter Kit for HVAC/R (NIST) is a heavy duty True-RMS current tester for professional HVAC/R commercial and industrial applications. Powered by the Milwaukee M12 LITHIUM-ION battery, the 2238-21 features an ergonomic pistol grip design which greatly increases comfort and ease-of -use in overhead applications. The unit also provides a wide 1.30” jaw opening to easily handle wire bundles, a thin jaw profile for access to tight spaces, a large white on black display, embedded non-contact voltage detection and an embedded extra bright LED Floodlight. A NIST Certificate of Calibration with Data is also included, needed by many organizations as proof of calibration with the date when NIST Calibration was performed. The 2238-21 is covered by the Milwaukee 5-Year Warranty.


  • Ergonomic Pistol Grip Design Best Orients Jaws and Display
  • Large Jaw Size of 1.30” measuring up to 750 MCM cable
  • Wide Current Range to 600 amps AC
  • Wide Voltage Range to 1000 volts AC/DC
  • CAT IV 600V / CAT III 1000V for greater safety
  • High Contrast, White on Black Display with Backlight for easy reading
  • LED Floodlight and Voltage Detection Add More Value
  • 600 microamps DC for Flame Rectification
  • Dual Banana Thermocouple for contact temperature measurements

Since its founding in 1924, Milwaukee has focused on a single vision: To produce the best heavy-duty electric power tools and accessories available to the professional user. Today, the Milwaukee name stands for the highest quality, durable and reliable professional tools money can buy.

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Our SKU: Milwaukee 2238-21NST

This product is listed under the following manufacturer number(s):

  • Milwaukee 223821NST

*Denotes a finish or option that has been discontinued

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