The 6625A is a modular DC Resistance and Current Measurement System including: 6622A Series Bridge, 6634A Temperature Stabilized Resistance Standards, 6664C Scanner(s), world’s most precise and stable 6623A Precision Current Source/Range Extender, Wired Equipment Rack, and Bridgeworks Software.


  • Complete Turn-Key System – Fully Integrated, Wired, Calibrated and Ready to Use
  • Widest Available Resistance Range from 1 μΩ ~1GΩ with Internal Voltages to 1 kVdc
  • Precision Current Source / Range Extension to 10,000 A with Built-In Power Supplies and Electronic Polarity Switching – NO Mechanical Switching
  • Wide Range of Ratios: 0.01:1 ~ 100:1 and up to 2,000,000:1 With Range Extension
  • Modular Design, Expandable Capabilities, Investment Protection
  • Change Key Parameters While Measurements Running in Automatic or Manual Modes
  • BridgeWorks™ Automation and Data Acquisition Software Included