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Part of a composite eyepiece
Terrestrial telescope

Inv. 3449.15
V.15 Part of a composite eyepiece
First half of the eighteenth century
Cardboard, Florentine paper
Length 140 mm

Description


Erecting tube belonging to terrestrial telescope V.31. It slides in the terminal part of the first section of the telescope, where it is stopped by a small collar. It contains two biconvex lenses whose focal length is 70 mm.




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