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Guildline Instruments
  • NewProducts
    • Released
      • 6540 Dual Measurement High Resistance Bridge
      • 7520 Automated Precision Voltage Divider
      • 3210T Thermometry Auto-Switch with Pre-Heat
      • 5600 Series High Precision Variable Temperature Fluid Baths
      • 6624CT-3000 Precision High Current DC Transformer
      • 6640T Series of Primary Thermometry Bridges
      • 7223CT-2S Precision AC Current Transformers
      • 7330 AC/DC Precision Oil Based Resistance Standards
      • 9340-4T 4-Terminal Decade Resistance Standards / RTD Simulators
      • GL 1050 Transfer Standard
      • GL 1010 Transfer Standard
    • Soon To Be Released
      • 7220 Asynchronous Power Analyzer
      • 7810 Transconductance Amplifier
  • Primary ElectricalMetrology
    • Highest Level Standards
      • Quantum Hall
      • Resistance Measurement Bridges
      • Precision Current Sources
      • Automated Precision Voltage Divider
      • AC and DC Current Transformers
      • High Voltage Capacitance and Inductance Measurement
      • High to Ultra High Resistance Measurement
    • Advanced True Turn-Key Measurement Systems
      • High Current and Resistance Measurement
      • Temperature Measurement Systems
    • Resistance Measurement Standards
      • DCC Resistance Bridges
      • High to Ultra High Resistance
      • Resistance Measurement Scanners
    • Resistance Standards
      • Temperature Stabilized Resistance Standards
      • Precision DC Air Standard Resistors
      • Precision AC/DC Air Standard Resistors
      • Oil Based Resistance Standards
      • Leading Decade Resistor Standards
      • Multi-Value Resistors
      • DC High Current and Power Resistance Standards
    • World’s Leading Precision Current Standards
      • DC Current Shunts
      • AC Wide Frequency Current Shunts
      • Ultra Stable Current Sources
      • Current Transformers
      • Wide Frequency Transconductance Current Amplifiers
    • Precision Transfer Standards
      • Precision Resistance Transfer Standard
  • AC and PowerStandards
    • Resistance Standards
      • 7334 AC/DC Precision Air Based Resistance Standards
      • 7330 AC/DC Precision Oil Based Resistance Standards
    • Precision AC Current Shunts
      • 7340 AC/DC Current Shunts
      • 7350 AC/DC Current Shunts
      • AC Shunt Accessories
    • Wide Band Current Sources
      • 7810 Transconductance Amplifier
      • 7620 Wideband Transconductance Amplifier
    • High Accuracy Power Analyzer
      • 7220 Asynchronous Power Analyzer
    • Capacitance Bridge / Extenders and Standards
    • Precision Current Transformers
      • 7223CT-2S Precision AC Current Transformers
  • Temperature Metrology
    • Environmental Control
      • Air and Fluid Baths
    • Temperature Measurement
      • Precision Temperature Bridges
      • Complete Turn Key Systems
    • Temperature Accessories
      • Complete Measurement Accessories
  • Oceanography 
    • Salinometers
      • Salinity Measurement
    • Temperature Measurement and Control
      • Measurement Standards
    • IAPSO Standard Seawater
      • IAPSO P35 Standard Seawater and Salinity Packs
  • Calibration and Repairs
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Design & Development: TD Graham & Associates & Probase Web