Artificial horizon; black glass 2 1/8" with 3 levelling screws

Artificial horizon; black glass 2 1/8" with 3 levelling screws, in black fish-skin case, with level (not original)

Details

Category:
Astronomy
Object Number:
1918-103
type:
ancillary instruments, astronomical measuring instruments and artificial horizons (glass)
credit:
Mr Thomas H. Court