![](https://coimages.sciencemuseumgroup.org.uk/296/240/medium_thumbnail_1919_0312__0003_.jpg)
Single Opera Glass by Chevalier
![Single Opera Glass by Chevalier, with helical focussing](https://coimages.sciencemuseumgroup.org.uk/383/652/medium_smg00083826.jpg)
Single Opera Glass by Chevalier, with helical focussing, Chevalier family, France, 1800-1848.
Details
- Category:
- Optics
- Object Number:
- 1928-913/1
- Materials:
- glass, brass (copper, zinc alloy) and gold plated (gilded)
- Measurements:
-
glass, closed: 45 mm 43 mm,