The operator manually adjusts the GlasCol® MiniTrol™, which has a percentage timer design and no sensing element. It regulates mantles, tapes, and cords, as well as small furnaces, ovens, hot plates, dies and other applications requiring stepless control. MiniTrol™ may also be used on any non-inductive loads to its rated capacity. It proportions the operating voltage to the load from 5 1/2% to 100% of the time according to the preset dial position. When turned off, it effects a positive break. For very small loads, smaller fuses may be used.