Skip to content

Amptec 720A Digital Micro-Ohmmeter

AMPTEC 720A Digital Micro-Ohmmeter

The AMPTEC 720A Micro-Ohmmeter is an affordable 7 range, 4-Wire Kelvin based product that is used to test electrical resistance on a wide variety of applications including winding resistance, contact resistance, and component testing. Ohmic resolutions vary from 10uΩ to 10Ω, The 720A micro-ohmmeter has an auto-range feature (available with NSN package) and is compatible with an RS232C interface (OP-232). Thanks to the Amptec 720A’s wide-range capabilities, reliability, and ease of use, this Micro-Ohmmeter is used commonly around the globe.

720A Abbreviated Specifications

Range200mΩ2 Ω20Ω200Ω2KΩ20KΩ200KΩ
Nominal Current100mA100mA10mA1 mA100uA10uA1uA


——-± .02% of reading & ± .03% of range  ——


Purchase Includes:

  • 720A Digital Micro-Ohmmeter
  •  Lead Set (OP-304AC)
  • Battery Charger (620-DC)
  • NIST traceable Calibration Certificate
  • Certificate of Conformity
  • Manual (downloadable)
  • Warranty letter

RS232 Explained

Kelvin Four Terminal Sensing Explained




The Amptec 720A is compatible with all 720A series lead sets as well as the 620 Series Test leads. For specific discount pricing information or to place an order for a  720A Micro-Ohmmeter, please contact ATEquip today.
Shipping: 8lbs | 12x8x12in | HS: 9030.1000 | COO: USA | ECCN: EAR99

On-line purchasing is not unavailable for this product. For specific discount pricing information or to place an order for a 620LK Igniter Tester, please contact ATEquip for discount pricing today.

Package Description Price

720A Comm Pkg

Includes 720A Micro-Ohmmeter, (OP-110) lead pouch, (OP-300) lead set, (OP-403) Probes, & NIST traceable Calibration Certificate.

720A NSN Pkg

Includes 720A Micro-Ohmmeter, (OP-232) RS232C interface, Auto-Ranging feature, (OP-110) lead pouch, (OP-300) leads, (OP-403) Probes, & NIST traceable Calibration Certificate.

AMPTEC RESEARCH is an ISO 9001:2015 Certified Accredited Quality Management System Company
ATEquip is a SAM.GOV Cage Code 5PF05 registered company with the New Entity ID: H5H4KAHBASC7