Feinstregler

Feinstregler is a German term meaning “fine regulator” and denotes a device or mechanism designed for precise regulation of a primary regulator in mechanical systems or instrumentation. In horology, the feinstregler refers to a small adjustment component integrated with the regulator or pendulum assembly that allows minute changes to the rate of a clock or chronometer. It typically operates via a fine-thread screw, lever, or micrometer-style mechanism, providing high-resolution adjustments while remaining lockable to prevent drift. In clocks, the feinstregler enables a watchmaker to refine the beat rate and timekeeping without altering major components such as the pendulum length or escapement geometry.

In other domains, similar concepts appear under different names: high-precision valves, micrometers, or needle regulators used to adjust flow, pressure, or temperature with fine granularity. A feinstregler in this broader sense may involve a needle valve, a micro-adjustable diaphragm actuator, or a servo-controlled element that yields slow, controllable changes.

Construction and use typically involve a micro-screw or cam with a scale and a locking mechanism. The device is mounted so adjustments can be read on a graduated dial or calibration marks, enabling repeatable settings.

History: the term is rooted in traditional German horology and scientific instrumentation from the 18th to 19th centuries. While still encountered in technical literature, contemporary equipment often describes the function with more specific component names.

See also: regulator, fine adjustment, micrometer screw, needle valve.