polarimeter?
Date1850-1900
Inventory Number1996-1-0685
ClassificationPolarimeter
Subject
Maker
American
?
Maker
English
?
Cultural Region
Dimensions9.2 × 10.9 × 13.5 cm (3 5/8 × 4 5/16 × 5 5/16 in.)
Material
DescriptionThis instrument has no optics left. It consists of an optical tube centered on a divided circle (0-180°-0, in single degrees). There is a pinhole at one end of the tube. A vernier is linked to an arm that rotates a section of the tube at the other end (where a polarizer lens, for instance, could have been fixed). The vernier has a tightening screw on top.
Signedunsigned
Félix Marie Pellin
Date: circa 1930
Object number: 1996-1-0365b