Image Not Available
for Spherical Geometry Teaching Aid
Spherical Geometry Teaching Aid
Date1870-1890
Dimensions19.1 cm
66 cm (26 in.)
66 cm (26 in.)
Credit LineCollection of Museum London, 1976
Object number1976.041.009
Label TextThis is an American unfolding or dissecting sphere, a mathematical demonstration tool and teaching aid. More often manufactured by European firms, this example was made by Albert H. Kennedy (1848-1940) of Rockport, Indiana, and is one of the few made in America. American companies used wood rather than the metal of European firms. They were made to be used by students rather than to be looked at. Kennedy's firm was the only one to use leather to join the moving segments.
NameModel, Instructional
CopyrightPhoto Credit: Toni Hafkenscheid
