Lemania 15 Family columm wheel jumper 4627

Lemania

Lemania is a historic Swiss watch movement manufacturer known for its exceptional chronograph calibres and important role in Swiss watchmaking. Founded in 1884, Lemania produced high-quality mechanical movements used by many respected brands, including Omega, Tissot, and Breguet. The company is especially recognized for its reliable chronograph movements, which powered professional, military, and sports watches throughout the 20th century.

Jumper

A jumper is a small spring-loaded component used in watch movements to control positioning, indexing, or clicking functions. It is commonly found in calendar, chronograph, setting, and winding mechanisms. Jumpers help parts move cleanly from one position to another and may need replacement if they are bent, weak, broken, or causing unreliable function.