Duo-Chrome Test Chart
- Made:
- 1920-1930 in United Kingdom
Bicycle lamp with duo-chrome test chart by Ever Ready Co.
Details
- Category:
- Ophthalmology
- Object Number:
- Y2000.176
- Materials:
- metal (unknown) and glass
- Measurements:
-
overall (laid flat): 81 mm x 75 mm x 95 mm,
- type:
- ophthalmic instrument
