Difference between revisions of "Axis (of a fixed lens)"
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Revision as of 13:00, 25 February 2009
The vertical line comprising the axes of revolution of the belt and rings composing the fixed lens. (Fig. 16b)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM