Two plane speculums by Lassell
- maker:
- William Lassell
Two plane speculums by Lassell, with Lassell's M.S. directions
Details
- Category:
- Astronomy
- Object Number:
- 1923-466/1
- Materials:
- speculum metal
- type:
- components, flat mirrors, metal mirrors and astronomical instruments
- credit:
- Mr Thomas H. Court
