Semicircular protractor with sliding vernier and box

Made:
1865

Semicircular protractor, brass, dated 1865, with separate sliding vernier, also brass, in wooden box

Details

Category:
Mathematics
Object Number:
1987-723
Materials:
brass and case, wood
type:
drawing instruments and semi-circular protractors
credit:
Sotheby's (New Bond St)

Parts

Box for semicircular protractor

Box for semicircular protractor

Wooden box for semicircular protractor with separate sliding vernier.

Materials:
wood (unidentified)
Object Number:
1987-723/1
type:
box
Image ©
The Board of Trustees of the Science Museum
Sliding vernier

Sliding vernier

Sliding vernier, brass, for semicircular protractor.

Materials:
brass (copper, zinc alloy)
Object Number:
1987-723/2
type:
vernier
Image ©
The Board of Trustees of the Science Museum