Hanhart Caliber 41

Caliber 41 is a manual-winding in-house flyback chronograph movement manufactured by Hanhart. It was the original caliber used in the Hanhart 417 chronograph issued to German pilots, featuring the 'Temposchaltung' flyback function that allows rapid reset and restart of timing without stopping the mechanism. The movement was produced in-house by Hanhart and remained in production until the 1960s. It represents an important historical example of early flyback chronograph development tailored for aviation instrumentation.