Drehknauf

Drehknauf is a term used to describe a knob that is rotated to control a parameter on a device. Commonly found on consumer electronics, audio gear, laboratory instruments, and vehicle controls, a Drehknauf serves as a tactile interface that translates human input into a change in the device's function, such as volume, temperature, or tuning.

Construction and operation: A Drehknauf typically consists of a knob body attached to a rotating shaft. The knob may be fixed to the shaft by a set screw, a press fit, or a splined/bore connection. Behind the knob is usually a potentiometer, rotary encoder, or switch that converts rotation into an electrical signal or mechanical action. Some knobs include detents for discrete steps, while others allow smooth, continuous rotation. Many models incorporate markings or illumination to indicate position.

Variants and applications: In audio equipment, Drehknäufe control volume, balance, or equalization. In climate or household devices, they regulate temperature or fan speed. In automotive dashboards, they may control audio volume, climate settings, or drive-mode selectors. The term emphasizes the rotational action rather than a push or toggle switch. Ergonomics, such as grip shape and tactile feedback, influence user experience.

See also: knob, potentiometer, rotary encoder, control switch. The term Drehknauf highlights the enduring role of rotary controls in human–machine interfaces.