stand for mirror or grating
Datelate 19th Century
Inventory Number2007-1-0538
ClassificationStand
Subject
Maker
American
?
Cultural Region
Dimensionsstand: 5.7 × 8.7 × 8.4 cm (2 1/4 × 3 7/16 × 3 5/16 in.)
bracket: 5.5 × 3.8 × 1.3 cm (2 3/16 × 1 1/2 × 1/2 in.)
bracket: 5.5 × 3.8 × 1.3 cm (2 3/16 × 1 1/2 × 1/2 in.)
Material
DescriptionThis is stand for supporting a diffraction grating, mirror, or similar optical component. It consists of a two thick brass disks held apart by three leveling screws and three spring-loaded screws. The screws are all on the underside of the lower disk. There is a rod in the center of the lower disk, too. The top disk is unobstructed. There is a central hole, 2 holes clustered on one side; 3 holes clustered on the other, and single hole near the edge.
With this stand is an unattached right angle bracket. The lower end has a screw hole for threading it onto a screw. The arm holds a finely threaded screw ending in an adjustable foot, which would have tightened down on a component.
The brass is all blackened and the knurling on the screws is cross-hatched.
With this stand is an unattached right angle bracket. The lower end has a screw hole for threading it onto a screw. The arm holds a finely threaded screw ending in an adjustable foot, which would have tightened down on a component.
The brass is all blackened and the knurling on the screws is cross-hatched.
Signedunsigned
Edmund Culpeper
Date: circa 1730
Accessories: 6 objectives for screw-barrel microscope; 3 objectives for compound body; 1 lieberkuhn; 1 opaque attachment; brass box; 2 ivory slides, 1 brass wet-cell slide; tweezer; ivory handle; glass specimen fish tube; storage box; instruction booklet by Culpeper (stored in instrument file).
Object number: 1173
Adie & Son
Date: circa 1850
Accessories: case; dust cap and sunshade; eyepiece
Object number: 5209
Hugh Powell
Date: 1841
Accessories: oculars (2); objectives (3): 1/2, 1/8, 1/4 with attachable Lieberkühn; stage slide holder; stage fish plate holder; X-Y mechanical stage; fish plate; prepared slides (2); plain glass slides (2) and cover slips (2); box of cover slips; sponge; cotton bag; folding scalpel; fish plate; mount for stage forceps; fishhook; assorted hardware; case
Object number: 1164
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1898
Accessories: oculars (4): 2, 4, and compensating oculars 6, 8; objectives: AA, DD, a2, and apochromat HI 2.0 mm; triple nosepiece; swing-out condenser with iris-cylinder diaphragm; disk diaphragm and central stop diaphragm; filter; eyepiece micrometer, brush, spare stage clips; large mechanical stage (2006-1-0114b); centering glass (2006-1-0114c) with instructions; magnification tables (2); standing case; key; leather traveling case (2006-1-0114d).
Object number: 2006-1-0114a