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Shagreen Four-Draw Monocular
|Main Tube Length||2.1in||5.4mm|
|Main Tube Diameter||1.3in||34mm|
|Objective Clear Aperture Diameter||1.0in||26mm|
This small Galilean telescope has a round parallel brass barrel, covered in shagreen. It has four brass draws and a flared eyecup. The objective lens is non-achromatic. It is not signed by the maker.
College of Optical Sciences
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