Listing is for One NEW  81mm (3.15") diameter cemented doubled achromat Fraunhofer lens, 340mm focal length, f4.25 FR, BK7 and F7 glass elements.  M1:Schott BK7, R1:180mm.  M2:Schott F7, R2:-142mm, R3:-700mm.  Lens is 13.8mm thick the the edges.   Lens weight is 260 grams. 

Typically used as objective lenses in 80mm binoculars and wide field finder scopes and spotting scopes. 

Please don't buy this unless you know what you are buying!  We don't want returns on these. They are in prime condition and are inspected and packaged well for shipping. We list a few at a time, plenty are available.

This is ONE doublet lens, no lens cell or mounting.  

Price includes USPS shipping in the USA!