![](https://coimages.sciencemuseumgroup.org.uk/62/70/large_thumbnail_2000_0086.jpg)
Graduated semicircular metal trial frames
- Made:
- 1891-1910
![Graduated semicircular metal trial frames](https://coimages.sciencemuseumgroup.org.uk/499/515/medium_smg00269757.jpg)
Graduated semicircular metal trial frames, two-cell with 2 lenses, English (?), 1891-1910
Details
- Category:
- Ophthalmology
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A681091
- Materials:
- glass, aluminium, ? and steel
- type:
- trial lenses
- credit:
- Laidlaw Purves, Mrs.