Trial case

Made:
1850-1930
Trial case, wooden, containing 235 trial lenses

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Trial case, wooden, containing 235 trial lenses
Science Museum Group
© The Board of Trustees of the Science Museum

Trial case, wooden, containing 235 trial lenses, in removable tray, English, 1850-1930

Parts

Convex spherical lens

Convex spherical lens

Convex spherical lens, 31 pairs, one of which is incomplete, forming a series, numbered +0. 12, 0.25(0.25)3.50(0.50)7(1)12(2)20

Materials:
metal, gilt and glass
Object Number:
A626777 Pt1
type:
spherical lenses
Concave spherical lens

Concave spherical lens

Concave spherical lens, 31 pairs, 1 of which is incomplete, forming a series, numbered -0. 12,0.25(0.25)3.50(0.50)7(1)12(2)20

Materials:
metal (nickel plated) and glass
Object Number:
A626777 Pt2
type:
spherical lenses
Convex cylindrical lens

Convex cylindrical lens

Convex cylindrical lens, 18 pairs, forming a series, numbered +0.25 (0.25)3(0.5)6

Materials:
metal (gilt) and glass
Object Number:
A626777 Pt3
type:
cylindrical lenses
Aperture with 2 pointers on perimeter

Aperture with 2 pointers on perimeter

Aperture with 2 pointers on perimeter

Materials:
metal (nickel plated)
Object Number:
A626777 Pt15
type:
apertures