micrometer drum
Date1875-1900
Inventory Number2007-1-0503
ClassificationMicrometer
Subject
Maker
American
Cultural Region
Dimensions5 × 2.3 × 5 cm (1 15/16 × 7/8 × 1 15/16 in.)
Material
DescriptionThis micrometer drum is made of red brass with a silvered scale. The knob for turning it is knurled along the rim and concave. The rest of the apparatus is missing.
Signedunsigned
Wm Gaertner & Company
Date: 1900-1920
Accessories: micrometer eyepiece, eyepiece adaptor
Object number: 1997-1-1836
Fauth & Company
Date: circa 1885
Accessories: spare parts, wood case
Object number: 1996-1-0028
Dollond & Son
Date: 1758-1764
Accessories: Fitted mahogany box
Object number: 0059
Troughton & Simms
Date: 1868-1870
Object number: 2006-1-0051
Troughton & Simms
Date: circa 1875
Accessories: 3 eyepieces; 1 diagonal; 1 set of shades; magnifier; dust cap; case.
Object number: 1996-1-0566
Bausch & Lomb Optical Company
Date: circa 1900
Accessories: case
Object number: 1997-1-0804
Andrew Pritchard
Date: 1835-1840
Accessories: box
Object number: 1088b