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IET is the World's Leading Resistance Decade Box Manufacturer With 50+ years of stability data and history, IET Labs manufactures a full line of resistance decade boxes that will cover most any budget and application: field, calibration laboratory or automated test stations.
From the world's highest precision to our cost-effective models, 1000's of models are available from 1 mΩ to 10 TΩ.
Programmable and self-calibrating models are also available to automate your resistance decades.
Contact us if you don’t find the decade resistor you need and we would be happy to design a custom decade to your requirements.
Almost all of IET’s resistance decade boxes are manufactured with pride in the USA.
GenRad 1433 Series Decade Resistor
Precision accuracy of 0.01% Resistance range from 1 mΩ to 111.11111111 MΩ 36 models available, 3 to 11 dials Long life switches with silver-alloy contacts
RS Series Resistance Substitution Box
Accurate 0.1% to 1% Wide range from 0.01 Ω - 100 MΩ (Depending on Model) Broad choice of standard and optional models with many powerful features Compact, convenient, and rugged
HARS Series Resistance Decade Box
Resistance from 1 mΩ to 111 MΩ Available in double-power version: HARS-X2 Wide choice: single through 11 decade units High accuracy - 0.01% (100 ppm) or 0.1% depending on model
PRS-330 Precision Programmable Resistance Box & RTD Simulator
Resistance range: 0.1 Ω to 20 MΩ with a Resolution of 1 μΩ or 6 digits Lab grade accuracy (70 ppm + 1 mΩ): 1.5 times better than conventional manual decade resistors Manual or Programmable resistor with USB, Ethernet and IEEE interfaces all standard Very low long term maintenance cost- with an 5 year warranty About 10% lower in cost to the PRS-370 If you own 8.5 Digit DMM (Fluke 8508A, 8588A or Keysight 3458A) you should strongly consider the PRS-370 .
OS-260 & OS-270 Resistance Decade Boxes / RTD Simulator
The revolutionary ohmSOURCE microprocessor controlled resistor is like nothing you have ever seen before! US Patent 6487456 Two cost-effective models available Accuracy's as tight as 0.01%, with resolution as good as 0.01Ω Engineered as an ideal RTD calibrator Unit can only be used as a MANUAL unit. Can not be connected to or controlled by a computer
HPRS Series High Power Resistance Decade Box
Resistance from 1 mΩ to 10 MΩ Power Rating : 225 W/decade, 250 W max. or higher (contact IET for custom higher power units) Accuracy: 0.5% or 1% Special and custom configurations available
RTD Series - Precision RTD Simulator
Highest accuracy, highest stability, lowest TC of any RTD Simulator available Accuracy for Z Series: 0.005% (0.012 ºC for PT 100) Resolution: 1 mΩ (0.0025 ºC for PT 100) Stability 0.0002% for 24 hours; 0.001% for 12 months
esi SR1030 Series Oil Immersed Transfer Standard
Resistance Values of 1 Ω - 100 kΩ Initial Accuracy... ± 20 PPM of nominal value matched within 10 PPM Transfer Accuracy... ± (1 PPM + 0.1uΩ at parallel value) for 100:1 Long Term Accuracy... ± 50 PPM of nominal value Calibration Accuracy... ± 10 PPM
esi SR1010 Resistance Transfer Standard
Resistance Transfer Standards available in the following values 1 Ω, 10 Ω, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ Initial Accuracy... ± 20PPM of nominal value matched within 10PPM Transfer Accuracy... ± (1PPM + 0.1uΩ at parallel value) for 100:1 Transfer Accuracy... ± (1PPM + 1uΩ at series parallel value) for 10:1 Long Term Accuracy... ± 50PPM of nominal value Calibration Accuracy... ± 10PPM
esi / Tegam DB62 Decade Resistor
Precision accuracy of ±(0.01% + 2 mΩ) Resistance range from 0.01 Ω to 11.1111 MΩ 4 models available, each covering six decades High-performance solid silver-alloy contacts Low zero resistance < 6mΩ
esi RS925D Resistance Decade
High accuracy - 20 ppm + 0.5 mΩ High stability - 20 ppm + 0.5 mΩ Resistance from 10 mΩ to 1.1 MΩ 20 μΩ resolution Precise fixed minimum resistance