instrument component; heliometer

Made:
1754-1770 in London
maker:
Peter Dollond

Double image object glass micrometer by Dollond, engraved Dollond, London.

Details

Category:
Astronomy
Object Number:
1911-278 Pt1
Materials:
brass, complete and mahogany
type:
instrument component
taxonomy:
  • component - object
  • furnishing and equipment
  • measuring device - instrument
  • micrometer - angle
  • double image micrometer
credit:
J.C. Stevens Auction House