Davidson type Optometer

Made:
1875-1885 in United Kingdom

Davidson type Optometer, apparatus for ophthalmic testing, unsigned, British, c.1880. Consists of two mahogany discs rotating on axis and having lenses mounted on the periphery, mounted on a brass stand, (one lens lacking)

Details

Category:
Optics
Object Number:
1938-126
Materials:
metal, brass (copper, zinc alloy), mahogany (wood), glass, paper, cardboard, lead and felt
Measurements:
overall: 575 mm x 540 mm x 490 mm, , 5.34kg
type:
optometer
credit:
Brice, E.T.

Parts

Davidson type Optometer

Davidson type Optometer

Davidson type Optometer, apparatus for ophthalmic testing, unsigned, British, c.1880. Consists of two mahogany discs rotating on axis and having lenses mounted on the periphery, mounted on a brass stand, (one lens lacking)

Materials:
mahogany (wood) , glass and brass (copper, zinc alloy)
Object Number:
1938-126/1
type:
optometer
Image ©
The Board of Trustees of the Science Museum
Testing card mount for Davidson type Optometer

Testing card mount for Davidson type Optometer

Testing card mounted on a brass holder, used with Davidson type Optometer, apparatus for ophthalmic testing, unsigned, British, c.1880.

Materials:
brass (copper, zinc alloy)
Object Number:
1938-126/2
type:
equipment
Image ©
The Board of Trustees of the Science Museum
Connecting arm for testing card mount

Connecting arm for testing card mount

Brass arm, used for securing a testing card mount to a Davidson type Optometer, apparatus for ophthalmic testing, unsigned, British, c.1880.

Materials:
brass (copper, zinc alloy)
Object Number:
1938-126/3
type:
component - object
Image ©
The Board of Trustees of the Science Museum

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