Leitz W large dissecting simple microscope
Datecirca 1925
Inventory Number1999-1-0077
ClassificationMicroscope
Subject
Maker
Ernst Leitz (company)
1849 - 1986
Maker
Bausch & Lomb Optical Company
1853-present
User
Gray Herbarium
founded 1842
Cultural Region
Place of Origin
Dimensionsmicroscope: 16.5 × 13 × 11.5 cm (6 1/2 × 5 1/8 × 4 1/2 in.)
case: 26.5 x 18.5 x 17.5 cm (10 7/16 x 7 5/16 x 6 7/8 in.)
case: 26.5 x 18.5 x 17.5 cm (10 7/16 x 7 5/16 x 6 7/8 in.)
Material
Accessorieshandrests (2); opal stage plate; 20x Leitz lens; 19mm Bausch & Lomb Coddington lens; case; key
Bibliography
DescriptionThis is a Leitz simple dissecting microscope, model W.
It is has a cast-iron horse-shoe shaped base with rounded edges. It is painted glossy black. The post is cylindrical and bright brass. It carries an articulated arm. The arm has a ring mount for the lens. Focus is by rack and pinion.
The rectangular stage has a glass top. There is a blackened brass tray below the stage with a wheel diaphragm. The stage clips are nickel.
The mirror has one plane side and one side with a white disk. It is mounted on a swinging arm below the stage.
This instrument is accompanied by one lens (20x), two leather-covered handrests, and a white porcelain tray to slide underneath the glass stage and above the diaphragm plate.
A standing wooden case for storage accompanies this instrument. It has nickel-plated hardware, and is padded in places with dark burgundy velvet. The dovetailing on the case is angled.
It is has a cast-iron horse-shoe shaped base with rounded edges. It is painted glossy black. The post is cylindrical and bright brass. It carries an articulated arm. The arm has a ring mount for the lens. Focus is by rack and pinion.
The rectangular stage has a glass top. There is a blackened brass tray below the stage with a wheel diaphragm. The stage clips are nickel.
The mirror has one plane side and one side with a white disk. It is mounted on a swinging arm below the stage.
This instrument is accompanied by one lens (20x), two leather-covered handrests, and a white porcelain tray to slide underneath the glass stage and above the diaphragm plate.
A standing wooden case for storage accompanies this instrument. It has nickel-plated hardware, and is padded in places with dark burgundy velvet. The dovetailing on the case is angled.
Signedon 20x lens: E. Leitz Wetzlar
on stage: E. Leitz Wetzlar
on coddington lens: B&L
Inscribedon the inside of the cabinet door and on tag: Gray / 1
ProvenancePaleobotany Student Laboratory, Gray Herbarium, Harvard University, Cambridge, MA; transfer to CHSI, ca. 1999.
Historical AttributesThis instrument was used in the Paleobotany Student Laboratory located in the Gray Herbarium. Harvard University, Cambridge, MA.
Ernst Leitz (company)
Date: circa 1910
Accessories: handrests (2); opal stage plate; 20x lens; case; key.
Object number: 1999-1-0076
Ernst Leitz (company)
Date: circa 1925
Accessories: aplanatic lens: 16x; matte white porcelain insert; handrests (2); case with key
Object number: 1996-1-0125
Triple Alliance: Zeiss - Bausch & Lomb - Saegmuller
Date: 1908-1915
Accessories: 19mm B & L Coddington magnifier; 7x B & L Coddington magnifier; handrests (2); case
Object number: 1999-1-0078
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 1899
Accessories: handrests (2); case
Object number: 1344
W. Watson & Sons Ltd.
Date: circa 1930
Accessories: lens; case with key (1997-1-1878b).
Object number: 1997-1-1878a
Ernst Leitz (company)
Date: circa 1896
Accessories: magnifiers (2): 20x and 16x; case with key
Object number: 1997-1-1879
Nachet et Fils (I)
Date: 1862-1880
Accessories: 2 handrests; 2 magnifier lenses; case.
Object number: 1331
W. Watson & Sons Ltd.
Date: circa 1920
Accessories: oculars (2 pairs): Bausch & Lomb 10x, Watson & Sons 6x; Watson & Sons objectives with canisters (2): 1/6, 2/3"; Bausch & Lomb objective 1.9mm; Leitz mechanical stage; Abbe condensor; standing case
Object number: 1324
Spencer Lens Company
Date: circa 1920
Accessories: Spencer objectives (3): 16, 4, 1.8 mm; Zeiss objective a*; Bausch & Lomb objective 1 1/2 "; filters (2); oculars (2): 6x, 10x; Abbe condenser; standing case
Object number: 1312
Ernst Leitz (company)
Date: 1898
Accessories: objectives (3): Leitz 3, 7 in original canisters; Spencer Lens Co. 2mm N.A. 1.30 ser. no. 9197; oculars (2): 3, 2; Abbe condenser; holder with 3 cup diaphragms; glass filters (2); box of cover slips; key; standing case
Object number: 1994-1-0007a
Ernst Leitz (company)
Date: circa 1919
Accessories: oculars (2): 3, 8x; accessory box; Leitz objectives (5); wrenches (2); ground glass; N.A. 1.45 condensor cap; Abbe condensor; rotary stage; case
Object number: 1345