A specialist watchmaker conducts a detailed, full examination to establish the nature of the tasks to be performed and identifies the watch model from its unique serial number.
Case and movement disassembly
Disassembly of the case and its components (glass, back, bezel, seals, etc.) and separation of the movement from the case.
Polishing of the case to the original specifications, taking the age of the watch into consideration.
Cleaning of the case by immersion in special baths used for ultrasound treatment.
Deep cleaning of all the components of the disassembled movement, using ultrasound and specific baths. During this process, the washing basket rotates slowly as it is lowered.
Verification of components
Examination of each component to establish whether signs of deterioration are present. Where applicable, repair or replace components.
Part taken from stock
A new part is taken from stock as a replacement for a part which has been identified as defective.
Adjustment of the part
Adjustment of the part according to requirements. In this case, adjustment of the wheel on the pivoting tool.
Assembly and oiling of movement to Longines specifications.
Fitting the movement, complete with its dial and hands, inside the case and securing it in place.
Testing the precision of the watch using a measurement and calibration device and adjustment to Longines specifications.
"Before and after" comparison
Comparison of the watch upon arrival at the Longines workshops and after restoration.