B&L Y dissecting simple microscope
Date1908-1915
Inventory Number1999-1-0078
ClassificationMicroscope
Subject
Maker
Triple Alliance: Zeiss - Bausch & Lomb - Saegmuller
1908 - 1915
Maker
Bausch & Lomb Optical Company
1853-present
User
Gray Herbarium
founded 1842
Cultural Region
Place of Origin
Dimensionsmicroscope: 19.5 × 14.5 × 12.5 cm (7 11/16 × 5 11/16 × 4 15/16 in.)
case: 25.5 x 19.5 x 21.5 cm (10 1/16 x 7 11/16 x 8 7/16 in.)
case: 25.5 x 19.5 x 21.5 cm (10 1/16 x 7 11/16 x 8 7/16 in.)
Material
Accessories19mm B & L Coddington magnifier; 7x B & L Coddington magnifier; handrests (2); case
DescriptionThis is a Bausch & Lomb simple dissecting microscope. It has a U-shaped, iron base with a black shiny finish. The pillar is brass. The focus is by rack and pinion. The movable rack is nickel plated. The articulated arm at the top of the rack has ring mounts to hold the Coddington magnifiers. Two (19 mm and 7X) are included.
The stage is brass with a smooth black finish. It has a large rectangular glass top and nickel stage clips. The substage mirror is fork-mounted on a swing-out arm. It is plano-concave.
The microscope has two wooden arm rests with black metal supports.
The case has a brass handle and a lock and key.
The stage is brass with a smooth black finish. It has a large rectangular glass top and nickel stage clips. The substage mirror is fork-mounted on a swing-out arm. It is plano-concave.
The microscope has two wooden arm rests with black metal supports.
The case has a brass handle and a lock and key.
Signedin medallion on heel and on 38 mm Coddington magnifier: BAUSCH & LOMB OPTICAL CO. / ROCHESTER, N. Y.
in medallion on heel: B-L / Z / S [in divided prism trademark]
on 19 mm Coddington magnifier: B. & L.
on 7X Coddington magnifier: B. & L. O. CO.
Inscribedin medallion on heel: 90621
FunctionThis instrument was used to teach paleobotany.
ProvenancePaleobotany Student Laboratory, Gray Herbarium, Harvard University, Cambridge, MA
Historical AttributesThis instrument was used in the Paleobotany Student Laboratory located in the Gray Herbarium, Harvard University.
Triple Alliance: Zeiss - Bausch & Lomb - Saegmuller
Date: 1908-1915
Accessories: coddington magnifiers (2): 38mm, 19mm; handrests (2); wooden case
Object number: 1997-1-1880
Ernst Leitz (company)
Date: circa 1925
Accessories: handrests (2); opal stage plate; 20x Leitz lens; 19mm Bausch & Lomb Coddington lens; case; key
Object number: 1999-1-0077
Triple Alliance: Zeiss - Bausch & Lomb - Saegmuller
Date: circa 1910
Accessories: Leitz objectives with cans (3): 6a, 3, 1/12 ; 1 B&L objective: 48mm; 1 Leitz 1/12 without lenses; Spencer mechanical stage; 1 Zeiss ocular: 8; 3 Leitz oculars: 6a, 3, 1/12; Abbe condenser; counting chamber; upright case
Object number: 1353
Nachet et Fils (I)
Date: 1862-1880
Accessories: 2 handrests; 2 magnifier lenses; case.
Object number: 1331
Carl Zeiss Jena
Date: circa 1932
Accessories: apochromatic objectives (2): 20/ 0.65, 40/ 0.95; canisters (3): Apo 10/ 0.30, Apo 10/ 0.65, Apo 40/ 0.95; oculars (2): pair of K 7x Mobimi; stops (3); screwdriver with heavy locking screw with washer; wrench; standing case, key
Object number: 1389
Carl Zeiss, Optische Werkstätte, Jena
Date: circa 1886
Accessories: oculars (2): Leitz 4xB, Winkel Zeiss kl 2; objectives (4): Leitz 7, 1/7a oil immersion, Zeiss B, HI 90 iris, B&L 8mm, 1/5, Grunow 1/6; B&L double nosepiece; parabolic reflector for stage; Abbe condensor with iris-cylinder diaphragm; articulated substage mirror; frame for cup diaphragms; cup diaphragms (2); Zeiss-B&L polarizing analyzer A6; Zeiss-B&L vertical illuminator; flat case; key.
Object number: 1044
Ernst Leitz (company)
Date: circa 1925
Accessories: aplanatic lens: 16x; matte white porcelain insert; handrests (2); case with key
Object number: 1996-1-0125
Ernst Leitz (company)
Date: circa 1910
Accessories: handrests (2); opal stage plate; 20x lens; case; key.
Object number: 1999-1-0076
Triple Alliance: Zeiss - Bausch & Lomb - Saegmuller
Date: 1908-1915
Accessories: case
Object number: 1996-1-0287
Ernst Leitz (company)
Date: circa 1899
Accessories: handrests (2); case
Object number: 1344
Bausch & Lomb Optical Company
Date: 1880-1889
Accessories: magnifier lens; concave substage mirror
Object number: 2002-1-0052
Bausch & Lomb Optical Company
Date: circa 1918
Accessories: 1 ocular: 4x; B&L objectives (3): 16 , 4, 1.9 mm on triple nosepiece; B&L objective cans (2):1/6, 2/3; standing case
Object number: 1356