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components; demonstration models; orreries; planetaria (models); terrestrial globe
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil.
Calotype print by Nasmyth of lunar crater models and a refracting telescope outside his home in England, 1858
Refracting telescope with 5.9-inch aperture lens, brass tube and English type equatorial mounting and clockwork drive