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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.
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
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
HRRS-5 kV & 10 kV Series - High Resistance Decade Box
Choose from units with a max. resistance of 1 GΩ, 10 GΩ, 10 GΩ, 1TΩ or 11 TΩ Units use the most stable and accurate resistors and custom high voltage switches Maximum Voltages of 5000 V or 10,000 V. For 2000 V, consider the standard HRRS Series Used for calibration of Meggers and sourcing out precision high resistance.
VRS-100 Series High Resistance Standards
Set of nine, ten or eleven resistors - 1 kΩ, 10 kΩ, 100 kΩ,1 MΩ, 10 MΩ, 100 MΩ, 1 GΩ, 10 GΩ, 100 GΩ, 1 TΩ and 10 TΩ , open circuit (Depending on model) High Accuracy - up to 20 ppm Standard voltage: up to 5 kV (voltages of 10 kV are available) Excellent for calibration of Meggers For higher resistance values above 10 TΩ see SRC-T Network Standards
RCS Series Resistance & Capacitance Box
Combination of resistance and capacitance decades Accurate 0.1% to 4% (depending on model) Capacitance range 100 pF - 100 µF Resistance range 1 Ω - 10 MΩ Compact, convenient, and rugged
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