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4" DIA CEMENTED DOUBLET, NOT ACHROMATIC

$45.00 USD
Product Code: L10753
Availability: In Stock

Beautiful 4 inch diameter cemented doublet, 11.5 inch effective focal length. Anti-reflection coated. However, our tests indicate that it is not achromatic for visual use. Maybe it was designed for other than visual use or it could have been designed to go into an optical system with other lenses. New, old stock. Only have a few

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