Longines dating movements

30-Oct-2020 06:24

Only movements in original and good running condition are taken for these measurements.If several such movements were investigated, the lowest truncated power reserve is recorded.US sizes are usually precise, because US movements and cases were standardized to a certain extent.Published diameters in lignes are often just advertizing: Small movements were published too small, and big movements too big.If a not permanently fixed dial spacer is supplied with the movement. Many market data bases are accessible for everyone.

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Parts like screw heads, settings, regulators, or outstanding pivot ends are not taken into account, because they can be modified to achieve over all the construction height.Most facts need no explanation, but the following well: Diameter D Additionally to the nominal diameter in French lignes or US sizes diameters are given in mm (Millimeters) as follows: D not further specified value from public sources.