IET Labs, Inc. manufactures manual and programmable substituters and test instruments, including calibration, test, measurement, metrology, R-L-C, RTD, voltage, and current products. IET Labs also manufactures it's GenRad line of decade box, audio, and strobe product lines.
IET Labs OS Series OhmSource resistance boxes are microprocessor-controlled and intuitively provide highly accurate resistance values up to 0.01%. Features include a resistance value range of up to 2.4MU, a resolution of 0.01, and a power rating of up to 1Watt.
Resistance substitution decade boxes from IET Labs employ thumbwheel switches with a range of 0.1ohm to 100megaohm and accuracies up to 0.1%. The boxes are economical and indispensable instruments with a variety of uses including engineering, design, troubleshooting, and service.