Frame (of an optic)

From International Dictionary of Marine Aids to Navigation
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Alternative term: Framework (of an optic)

A rigid structure, usually of metal, in which the refracting and reflecting elements of an optic are mounted. (Figs. 10 and 16b)

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

[[Category:2.2 Optical Apparatus]

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM