Order (of an optic)
2-2-260
Classification of an optic according to its focal length.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
[[Category:2.2 Optical Apparatus]
2-2-260
Classification of an optic according to its focal length.
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