Optical cabinet or compendium in wooden mahogany case by Benjamin Martin
1765-1775
Telescope in scioptic ball
Scioptic ball and mirror
Telescope in Scioptic ball
Telescope in scioptic ball
Simple scioptic ball
1740-1760
Scioptic ball? in mount
Scioptic ball, ostensibly by George Adams
Scioptic ball with fixed mirror, 1745-1755
1745-1755