Watson & Sons high power binocular compound microscope
Datecirca 1920
Inventory Number1324
ClassificationMicroscope
Subject
Maker
W. Watson & Sons Ltd.
1837 - 1969
Owner
Dr. Eathen Allen Brown
1908 - 1979
Maker
Bausch & Lomb Optical Company
1853-present
Maker
Ernst Leitz (company)
1849 - 1986
Cultural Region
Place of Origin
Dimensionsmicroscope: 34.3 × 15.2 × 19.5 cm (13 1/2 × 6 × 7 11/16 in.)
case: 42 × 22.5 × 24.1 cm (16 9/16 × 8 7/8 × 9 1/2 in.)
case: 42 × 22.5 × 24.1 cm (16 9/16 × 8 7/8 × 9 1/2 in.)
Material
Accessoriesoculars (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
DescriptionThis is a Watson & Sons high power binocular compound microscope. The instrument is constructed of brass with the body, nosepiece, arm, and foot finished in black enamel. The large binocular body has a knurled focus ring on the right eyepiece tube and is fitted with a three-objective revolving nosepiece. The coarse
focus is by rack and pinion.
The microscope has a square stage with a hard rubber top. It is fitted with stage clips and a clamp-on mechanical stage manufactured by E. Leitz. Substage equipment includes a plug-in condenser with an iris diaphragm and a swing out filter holder. A mirror sits below on an adjustable tail piece.
The entire instrument is supported by a heavy u-shaped base.
There is a standing wooden case for storage.
focus is by rack and pinion.
The microscope has a square stage with a hard rubber top. It is fitted with stage clips and a clamp-on mechanical stage manufactured by E. Leitz. Substage equipment includes a plug-in condenser with an iris diaphragm and a swing out filter holder. A mirror sits below on an adjustable tail piece.
The entire instrument is supported by a heavy u-shaped base.
There is a standing wooden case for storage.
Signedon front of binocular body: W. Watson & Sons, Ltd. / 313 High Holborn / London
Inscribedon front of binocular body: High Power Binocular
on front of binocular body beneath signature: 44009
on card inside case: This microscope belongs to / E.A. Brown / St. Mary's Hospital Medical School / Padinngton London / Number Registered Finder Rewarded
ProvenanceCountway Library, Harvard University, 1981
Historical AttributesThis instrument was owned by Dr. Eathan Allen Brown (d. 1980), a Boston allergist.
Dr. Brown also owned microscope nos. 1350 and 1357.
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
W. Watson & Sons Ltd.
Date: circa 1885
Accessories: oculars (2 pairs): B and D; objectives in marked canisters (4): 1/4, 1/2, 1, 3 inches; condenser with iris diaphragm; rotating wheel diaphragm; iris diaphragm; set of 4 disk diaphragms in brass box; triple nosepiece; live box; prisms for Wenham binocular system (2); stage for simple microscope with rotating wheel diaphragm; vulcanite stage; spare knobs (2); parts box; case
Object number: 1249
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
Julien P. Friez & Sons
Date: 1913-1929
Accessories: The following information for supplies was found on a metal plate under the collection tank on the top of the base: "Acc'y CAT# CHART; 1015, INK # 10, PEN # 3, CAT: 402. JULIEN FRIEZE AND SONS BELFORT OBSERVATORY - BALTIMORE, MD"
Object number: RS0316
Spencer Lens Company
Date: circa 1930
Accessories: oculars (4): 6x, 10x; Spencer objectives (3): 16, 4, 1.8 mm; triple nosepiece; mechanical stage; monocular tube; dark field diaphragm; Abbe condenser; blue filter; case
Object number: 1317
Carl Zeiss Jena
Date: 1932-1940
Accessories: oculars (2): Leitz 6x; objectives (3): HI 90 / 1.25, 40 / 0.65, AA 10 / 0.30; condenser with iris; triple nosepiece; attached mechanical vulcanite stage
Object number: 1996-1-0345
Spencer Lens Company
Date: 1940-1945
Accessories: oculars (2): 9x; paired objectives (3): 6x, 3x, 1x.; illuminator; base board; case; key
Object number: 1391
Carl Zeiss Jena
Date: circa 1928
Accessories: oculars(2): a pair of K 15x Mobimi; objectives (3): apochromats 20 n.a. 0.65 and 70 n.a. 1.25, and achromat 8 n.a. 0.20; mechanical stage; condenser with iris diaphgragm; locking screw with washer and screwdriver; standing case, key.
Object number: 1369
Spencer Lens Company
Date: circa 1946
Accessories: oculars (2 pair): 9x, 15x; objectives (3 pairs): 1x, 4x, 8x; user manual; blue filter; case with key
Object number: 2004-1-0336
Joseph Zentmayer
Date: circa 1895
Accessories: convertible objective 1 /8 & 2/3"; triple nosepiece; 1 pair of oculars; x-y and rotary stage; Abbe condensor; slides; covers; balsam; stage micrometer; glassware to view flowing liquids; boxes of glass and brass
Object number: 1299
Joseph Zentmayer
Date: circa 1895
Accessories: convertible objective 1 /8 & 2/3"; triple nosepiece; 1 pair of oculars; x-y and rotary stage; Abbe condensor; slides; covers; balsam; stage micrometer; glassware to view flowing liquids; boxes of glass and brass
Object number: 1299.1
Spencer Lens Company
Date: 1940-1945
Accessories: oculars (1 pair): 10x; objectives (2 pairs): 1X and 2.3X ; case
Object number: 2004-1-0335