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.

ZX74系列十進制電阻箱是精度非常高、穩定的六刻度盤儀器。該系列有 4 個版本，最大電阻為 1,111,111Ω。ZX83 系列又增加了兩個十進制盒，將電阻范圍擴展到 111,111,100Ω。

The resistive elements are non-inductively wound on high quality formers using a resistance wire of specially selected alloy. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and also a low temperature coefficient.

電阻元件使用特殊選擇的合金電阻絲無感纏繞在高質量成型器上。每個電阻元件都經過熱處理，并經過受控的老化過程，以產生最高的穩定性和較低的溫度系數。

Switches are of the highest quality with low pressure contacts for long life and reliability. Each decade switch is manufactured using a fully enclosed construction for maintenance free operation. These decade boxes are housed in attractive robust metal cases with a retractable carrying handle.

開關質量很好，具有低壓觸點，使用壽命長且可靠。每個十進制開關均采用全封閉結構制造，可實現免維護作。這些十進制盒裝在帶有可伸縮提手的精美堅固的金屬箱中。

The very popular ZX74 model has a lowest decade with steps of 1mΩ. This is particularly useful for Resistance Thermometer Simulation and resistance bridge networks. All models have an extra terminal connected to the electrostatic screen which may be required in AC. bridge applications.

非常流行的 ZX74 型號具有zui低的十進制，步長為 1mΩ。這對于電阻溫度計仿真和電阻電橋網絡特別有用。所有型號都有一個額外的端子連接到靜電屏，這在交流電橋應用中可能需要。

The ZX90 Series of Decade Resistance Boxes comprise of 10 instruments to cover a resistance range of up to 1,111,111Ω with instruments available in 4, 5, 6 and 7 Decades. Whilst they are low cost these instruments are of high quality and feature precision low contact resistance switches.

ZX90 系列十進制電阻盒由 10 臺儀器組成，涵蓋高達 1,111,111Ω 的電阻范圍，儀器有 4、5、6 和 7 十進制可供選擇。雖然成本低，但這些儀器質量很好，具有精密、低接觸電阻的開關。

The resistive elements are made of enamelled manganin wire which is non-inductively wound onto high quality formers. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and to achieve low temperature coefficient. The instruments are housed in an attractive metal case which is both robust and dust proof.

電阻元件由漆包錳絲制成，無感纏繞在高質量成型機上。每個電阻元件都經過熱處理并經過受控老化過程，以產生最高的穩定性并實現低溫度系數。這些儀器裝在一個有吸引力的金屬外殼中，既堅固又防塵。