Optic rotation mechanism: Difference between revisions
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Latest revision as of 09:24, 17 September 2026
No English Term
The mechanism which rotates the optic or revolving screen in a flashing or occulting light.
Note: The terms Lens Clock and, in French, Machine de Rotation a Poids refer to such a mechanism when driven by a falling weight.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
