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demonstration stand (astronomic telescope)
TEACHING AIDS
demonstration stand
wood; metal
1999.3243
TEACHING AIDS
demonstration stand
wood; metal
Demonstration stand for showing the workings of an astronomic telescope. Metal aperture for objective lens at one end. Three brass stands in a line. Small round lens on middle stand, Wooden base with lines of incidence and refraction marked.
1999.3243
BOA Purchase, 1938