Details
Eidotrope slides
Three hand-cranked slides, the wood mounts 6½ x 4 inches, 5 x 4½ inches and 7 x 4½ inches (3)
Three hand-cranked slides, the wood mounts 6½ x 4 inches, 5 x 4½ inches and 7 x 4½ inches (3)
Further details
See illustration