Eidograph, by Alexander Adie; in mahogany box 2'11

Made:
1823-1834 in Edinburgh
maker:
Alexander Adie

Eidograph, by Alexander Adie; in mahogany box 2'11 1/4" x 7 1/4" x 4", middle bar divided and numbered 0 to 70 each way; arms 70 one way, and 80 the other

Details

Category:
Mathematics
Object Number:
1911-240
type:
scaling drawing instruments
credit:
British Admiralty (Hydrographic Department)