本说明书涵盖了可变电阻器，该可变电阻器具有成形为弧形的组成电阻元件和均匀地支承在其上的触点，使得当操作轴转动时，在触点的端子和电阻元件的任一端的端子之间产生电阻变化。这些电阻器能够在70摄氏度的最高环境温度下满负荷运行（在使用最大电阻的情况下），并且能够在120摄氏度的最大温度下适当减额时连续运行（见6.9）。

This specification covers the variable resistors having a composition resistance element shaped in an arc, and a contact bearing uniformly thereon, so that a change in resistance is produced between the terminal of the contact and the terminal of either end of the resistance element when the operating shaft is turned. These resistors are capable of full load operation (where maximum resistance is engaged) at a maximum ambient temperature of 70 degrees C and are capable for continuous operation when properly derated, at a maximum temperature of 120 degrees C (see 6.9).