![[A volvelle disk with a map of the Northern Hemisphere.]](jpegs/56798.jpg)
[A volvelle disk with a map of the Northern Hemisphere.]
[n.d., c.1820.]
Scarce engraving with original hand colour. Cut into a circle, 115mm (4½") diameter, pinhole in centre. Lacking backing sheet.
A volvelle disk, probably for calculating time difference.
See reference 56881
[Ref: 56798] £320.00
Scarce engraving with original hand colour. Cut into a circle, 115mm (4½") diameter, pinhole in centre. Lacking backing sheet.
A volvelle disk, probably for calculating time difference.
See reference 56881
[Ref: 56798] £320.00