Two plane speculums by Lassell

Made:
1840-1850 in Liverpool
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