11 pairs, 1 of which is incomplete
11 pairs, 1 of which is incomplete
Trial case
- maker:
- S Maw, Son & Sons
This image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
License
Science Museum Group
© The Board of Trustees of the Science Museum
Trial case, wooden, containing 72 trial lenses and trial frame, by S. Maw Son and Sons, 7-12 Aldersgate Street, London, England, 1901-1970.
Details
- Category:
- Ophthalmology
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A606424
- Materials:
- case, wood, case, brass, case, silk, lined and plastic
- Measurements:
-
length 240 mm
width 223 mm
height 68 mm
- type:
- trial lenses
Parts
11 pairs, 1 of which is incomplete
11 pairs, 1 of which is incomplete
6 pairs of trial lenses
6 pairs of trial lenses
6 pairs, 1 of which is missing
6 pairs, 1 of which is missing
Prism, glass
Prism, glass, 38mm diameter
Blank disc
Blank disc, brass, 38mm diameter used to occlude one eye whilst other is tested
- Measurements:
-
diameter 38 mm
- Materials:
- brass (painted)
- Object Number:
- A606424 Pt6
- type:
- trial lenses
Stenopaic slit
Stenopaic slit, brass, 38mm diameter used for high astigmatism or irregular refraction
- Measurements:
-
diameter 38 mm
- Materials:
- brass (painted)
- Object Number:
- A606424 Pt7
- type:
- trial lenses
Pin-hole disc
Pin-hole disc, brass, 38mm diameter used in several tests, usually for investigating retina sensitivity
- Measurements:
-
diameter 38 mm
- Materials:
- brass (painted)
- Object Number:
- A606424 Pt8
- type:
- trial lenses
3, 1 red
3, 1 red, 1 green, 1 blue
Tinted lens
Tinted lens, glass, 38mm diameter
Related Objects
Plaster copy of oculist's seal with inscription on four sides
Impression from oculist's seal in plaster
