Calibre 11" 409 Technical Data - Parts List and Diagram
Technical data and parts list for the Jaeger-LeCoultre calibre 11" 409 movement. Complete parts diagram with nomenclature identifying all component parts with numbered references, essential for service technicians and horologists performing maintenance, repair, or restoration work on this precision Swiss mechanism. Total height 4.00 mm, engagement diameter 23.00 x 10.50 mm. Mainspring specifications: length 245 mm, height 1.15 mm, thickness 0.095 mm, rated at 18000 oscillations per hour. The detailed exploded diagram provides the exact visual reference needed to correctly disassemble, service, and reassemble this calibre.
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