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components; demonstration models; orreries; planetaria (models); terrestrial globe
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
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil.