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Tinsley Precision Instruments

The Tinsley Model 4721 decade box is designed for the checking and calibration of insulation testers at voltages of up to 5000V DC.

The total range covered is from 1 kΩ to 1TeraΩ using specially selected resistors and a high quality switch mounted on an easy to read panel.

This resistance box is housed in a strong aluminium case with lid and carrying handle to p... Read more...

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Tinsley Precision Instruments

Portable 9 Decade High Resistance Box Model 4720 Series

Designed for the checking and calibration of insulation testers at voltages of up to 5000V DC, the Tinsley Model 4720 high resistance decade boxes provides up to 9 decades of resolution.

The total range covered is from 1 kΩ to 1,111,111,110kΩ using specially selected resistors and high quality switches moun... Read more...

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Tinsley Precision Instruments

The ZX74 Series of Decade Resistance Boxes are very high accuracy and stable six-dial instruments. There are 4 versions in the series with a maximum resistance of 1,111,111Ω. The ZX83 series adds another two Decade Boxes that extend the resistance range to 111,111,100Ω.

The resistive elements are non-inductively wound on high quality formers using a resistance wire of... Read more...

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