Stepped Lens
2-2-130
A lens or fixed lens of dioptric elements only, having a profile of stepped shape.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
2-2-130
A lens or fixed lens of dioptric elements only, having a profile of stepped shape.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
ampere
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM