adjustable slit with micrometer
Date1875-1900
Inventory Number2007-1-0382
ClassificationSlit
Subject
Maker
American
?
Maker
English
?
Cultural Region
Dimensions5 × 6.3 × 4.1 cm (1 15/16 × 2 1/2 × 1 5/8 in.)
Material
DescriptionAn adjustable slit is operated by a micrometer screw with a calibrated scale. The micrometer drum looks to be made of aluminum. The slit is mounted on the end of a draw tube that would have been inserted into a collimating telescope.
Signedunsigned
Bausch & Lomb Optical Company
Date: circa 1949
Accessories: B & L objectives (2): 32 mm, 48 mm; ocular 10x; objective can in cardboard box
Object number: 1997-1-0313
Buff & Buff Manufacturing Company
Date: circa 1905
Accessories: wood case; leather case; right-angle prism; plumb bob; oil flask; tripod (5174b)
Object number: 5174a
