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History of Science Museum

Douglas Reflecting Protractor, by Cary, London, Early 19th Century

Inventory Number 13698


Acknowledgement: © History of Science Museum, University of Oxford, inv.13698

Item type
Object
Makers
Cary
Provenance
Purchased from Dr. Reginald S. Clay with his collection. Patented by Sir Howard Douglas in 1811.
Primary inscriptions
"Cary London" and "Patent 138" (the latter presumably a serial number)
Physical material
Wood
Copper Alloy
Iron
Ivory
Object type
Protractor
Inventory No
13698
Accession Number
1944-1/part

Description

Scale of degrees 0-130 with Vernier. Diagonal plotting scale 0-1760 (yards) on base rule of protractor. With adjusting key in fitted mahogany case.