Overall: 3 1/2 x 5 x 5 1/4 in. ( 8.9 x 12.7 x 13.3 cm )
Hand-held stereoscope with a folding, metal, accordian-style, and wooden stereograph holder, folding turned handle and a wooden mask with two square glass viewing lenses.
stamped: on the wooden stereograph holder bar: "PATENTED/ JUL. 5 1870 & MAR 20 1878"
Due to ongoing research, information about this object is subject to change.