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demonstration stand (terrestrial telescope)
TEACHING AIDS
demonstration stand
wood; brass; glass
overall: 75 mm x 360 mm x 54 mm

Demonstration stand for showing workings of a terrestrial telescope. Rectangular wooden base supporting an objective lens mounted on black metal disc and three smaller inverting lenses as well as two aperture stops mounted along the base on brass stands. Empty brass stand at end for missing eyepiece lens. Lines of incidence and refraction marked on base.


1999.2205

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1999.2205a.jpg

1999.2205.jpg

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