Catalogue No.
1572
Spare SET OF Lens FOR Newton'S
Diameter 50mm, consists of combination of one Plano Convex Lens of F.L.
Diameter 50mm, consists of combination of one Plano Convex Lens of F.L. 100cm & other plane glass circular disc of same diameter 50mm.
a. Green glass lens set (50mm)
b. White glass lens set (50mm)