Powell & Lealand binocular compound microscope
Datecirca 1845
Inventory Number1327
ClassificationMicroscope
Subject
Maker
Powell & Lealand
founded 1841
Place of Origin
Place of Use
Dimensionsmicroscope: 38.5 × 15.3 × 21.1 cm (15 3/16 × 6 × 8 5/16 in.)
case: 44.4 × 21.9 × 25 cm (17 1/2 × 8 5/8 × 9 13/16 in.)
case: 44.4 × 21.9 × 25 cm (17 1/2 × 8 5/8 × 9 13/16 in.)
Material
Accessoriespaired oculars (2); objectives (3): 1/4, 1/2, 1 "; frog plate; live box; box of cover glasses; stops (2); mechanical stage; Wenham prism; standing case
DescriptionThis is a Powell & Lealand binocular compound microscope. The instrument is constructed entirely of brass and has a unique "kettle drum stand" that combines both the foot and pillar. The binocular body has a single nosepiece and is attached to a horizontal arm. Coarse focus is by rack and pinion. Fine adjustment is by a screw located on the side of the arm.
There is a square mechanical stage with a rotating top. There are two knobs on the stage, one permitting front to back movement, the other side to side movement. An elaborate substage is fitted beneath the stage and it includes an achromatic condenser, disc diaphragms, and a disc of central stops. Below is a mirror mounted on the lower end of the central pillar.
This microscope is accompanied by a standing wooden case.
There is a square mechanical stage with a rotating top. There are two knobs on the stage, one permitting front to back movement, the other side to side movement. An elaborate substage is fitted beneath the stage and it includes an achromatic condenser, disc diaphragms, and a disc of central stops. Below is a mirror mounted on the lower end of the central pillar.
This microscope is accompanied by a standing wooden case.
Signedon arm: Powell & Lealand / Makers / London / 1845
ProvenanceDavid P. Wheatland purchased from Henry Berman, New York City, New York. Donated to CHSI June 6, 1972.
Powell & Lealand
Date: date 1859
Accessories: Low power objective with canister; oculars (3)
Object number: 1267
Powell & Lealand
Date: date 1859
Accessories: Low power objective with canister; oculars (3)
Object number: 1267.1
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
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
Ross and Company
Date: circa 1876
Accessories: paired oculars A,B; paired Ross oculars; objectives (3): :1/2 (no can), 2 Beck , 1/5 Ross; Wenham parabolic illuminator; condensor; X-Y and rotary stage; bull's eye on stand; double nosepiece; standing case
Object number: 1300
Smith & Beck
Date: circa 1850
Accessories: Achromatic condensor; a darkfield condenser (Wenham's parabolic reflector); a substage set of aperture stops on a swingaway vane inside a sleeve; a nickel tweezers; a stage forceps; and a bull's eye condenser with a stand, a glass tray for the stage, Varley live box; case.
Object number: 1059
Joseph Zentmayer
Date: circa 1880
Accessories: Zentmayer objective with cannister: 1 1/2; paired oculars (3); Bicknell's achromatic condenser; rotating wheel diaphragm; polarizing eyepiece, polarizer by objective; camera lucida; plane glass window and brass socket; monocular tube; parts box with key; standing case with key.
Object number: 1015
Carl Zeiss Jena
Date: circa 1928
Accessories: oculars (3)): 10x Mobimi, 15x & Mobimi, 10x; objectives (3) 90 / 1.25, 40 / 0.65, 10 / 0.30; canisters (3): 90, 40, 8; mechanical stage on vulcanite; Abbe illuminator; triple nosepiece; stops (2): 1, r; screwdriver with locking screw and washer; wrench; standing case; key.
Object number: 1996-1-0339
Constant Vérick
Date: circa 1875
Accessories: oculars (3): 1, 2, 3; objectives (7): 0, 2, 4, 6, 8, 10 water immersion (2); substage stops (3); condenser with aperture diaphragm wheel on dovetail slide; bullseye; revolving double nosepiece; spatula; blue glass filter; case; and key
Object number: 1012
Nachet et Fils (I)
Date: 1862
Accessories: 3 Oculars: 1, 2, 3; 3 Objectives in fitted box:1, 2, 3; one on tube: also #5, but longer; Camera lucida "Nachet"; 9 Glass slides; Cover glasses; bull's eye on jointed arm; wheel with 2 stops under stage; small blue filter; flat case with key.
Object number: 1069
Nachet et Fils (I)
Date: 1862
Accessories: 3 Oculars: 1, 2, 3; 3 Objectives in fitted box:1, 2, 3; one on tube: also #5, but longer; Camera lucida "Nachet"; 9 Glass slides; Cover glasses; bull's eye on jointed arm; wheel with 2 stops under stage; small blue filter; flat case with key.
Object number: 1069a
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