Johnson's 'Volutor'

maker:
Hoffmann, F.

Johnson's "Volutor"; made by T. Hoffmann

Details

Category:
Mathematics
Object Number:
1910-165
Materials:
brass (copper, zinc alloy), metal (unknown) and thread
Measurements:
overall (volutor): 300 mm x 270 mm x 180 mm,
type:
volutors
credit:
J.C. Stevens Auction House