B&L BB continental compound microscope
Datecirca 1900
Inventory Number2001-1-0032
ClassificationMicroscope
Subject
Maker
Bausch & Lomb Optical Company
1853-present
Maker
Ernst Leitz (company)
1849 - 1986
Cultural Region
Place of Origin
Dimensionsmicroscope: 30 × 10.8 × 14.7 cm (11 13/16 × 4 1/4 × 5 13/16 in.)
case: 39.6 × 17.5 × 21.7 cm (15 9/16 × 6 7/8 × 8 9/16 in.)
case: 39.6 × 17.5 × 21.7 cm (15 9/16 × 6 7/8 × 8 9/16 in.)
Material
Accessorieseyepieces (2): B&L, 1X, and Leitz, 10X; objectives (2): 1/6 , 1/2; cardiod condenser; case
Bibliography
DescriptionThis is a Bausch & Lomb continental compound microscope, model BB. It in inclinable, has a brass arm and body, and a black horseshoe-shaped base. The main tube is brass and has a nickeled draw tube graduated in millimeters and sliding in a cloth sleeve. The coarse focus is by rack and pinion. The fine adjustment is by a graduated knob on top of the post.
The stage is rectangular and topped with vulcanite. Stage clips are nickel. The substage apparatus includes a cardiod condenser on a swing out mount adjustable in the vertical direction by a screw. The plano-concave mirror is on a swinging arm.
A revolving triple nospiece is made of nickel and signed by Bausch & Lomb. Two objectives and two eyepieces are included. One eyepiece is by E. Leitz.
A standing wooden case for storage accompanies this instrument. The case is marked "50" and "55" on its top in light scratches. The key is missing.
The stage is rectangular and topped with vulcanite. Stage clips are nickel. The substage apparatus includes a cardiod condenser on a swing out mount adjustable in the vertical direction by a screw. The plano-concave mirror is on a swinging arm.
A revolving triple nospiece is made of nickel and signed by Bausch & Lomb. Two objectives and two eyepieces are included. One eyepiece is by E. Leitz.
A standing wooden case for storage accompanies this instrument. The case is marked "50" and "55" on its top in light scratches. The key is missing.
Signedengraved on foot and objectives: Bausch & Lomb Optical Co. / ROCHESTER, NY
engraved on canisters: BAUSCH & LOMB OPTICAL CO. / ROCHESTER N.Y.
engraved on eyepiece, 1: BAUSCH & LOMB OPTICAL CO.
engraved on eyepiece, 10X: Ernst Leitz Wetzlar
engraved on nosepiece: BAUSCH & LOMB OPT. CO.
Inscribedon instrument: PAT. FEB. 16, 1897.
on medallion on heel: 51275
on case: 50
on case: 55
Bausch & Lomb Optical Company
Date: 1897-1908
Accessories: ocular: 2; objectives (6): B. & L. 1/12, 1/2, 2, Reichert No. 3 and No 7a (missing), Spencer & Smith 1/4, 1; immersion oil in canister; blue filter; square cover glasses; dark-field stop; empty pillbox for cover slips; 5 Triple Alliance glass slides in paper; magnification table; case; key.
Object number: 1387
Bausch & Lomb Optical Company
Date: circa 1903
Accessories: eyepiece; objectives (3): "Variable", 2/3" 0.24 NA, 1/6''; triple nosepiece; substage including Abbe condenser; revolving mechanical stage
Object number: 2002-1-0055
Bausch & Lomb Optical Company
Date: circa 1899
Accessories: B&L objectives on triple nosepiece and with cans (3): 1/12, 1/6, 2/3"; Zeiss objective for oil immersion: 40; Leitz mechanical stage; oculars (2): 1, 2; Abbe condensor; immersion oil can; standing case; key; spare stage clips.
Object number: 1351
Bausch & Lomb Optical Company
Date: circa 1898
Accessories: objective lenses with brass cases (3); oculars (2): 1,2; case; camera lucida [1057b]
Object number: 1057a
Bausch & Lomb Optical Company
Date: 1900-1908
Accessories: objectives (3): 2 mm, 4 mm, 16 mm; oculars (2): 5, 10; condenser with two diaphrams; standing case with lens card
Object number: 1298
Bausch & Lomb Optical Company
Date: circa 1899
Accessories: ocular micrometer; 1 B&L objective 2/3 "; triple nosepiece; standing case
Object number: 1352
Spencer Lens Company
Date: circa 1908
Accessories: oculars (2): 4x, 8x; Spencer objectives (3): 16, 4, 1.8 mm; blue filter; dark field stop; booklet; slides (4); box of cover slips; case; key.
Object number: 1323
Ernst Leitz
Date: 1910-1920
Accessories: case; key; magnification card.
Object number: 2008-1-0054
Bausch & Lomb Optical Company
Date: 1908-1910
Accessories: ocular; objective; standing case
Object number: 1209
Bausch & Lomb Optical Company
Date: circa 1910
Accessories: objectives with original canisters (3): 1.9 mm 1.30 n.a., 4 mm 0.65 n. a.,16 mm 0.25 n. a.; oculars (2): 5, 10; immersion oil bottle; standing case with key
Object number: 1304
Bausch & Lomb Optical Company
Date: 1898
Accessories: objectives (4); oculars (2); vertical illumination attachment
Object number: 1199
Bausch & Lomb Optical Company
Date: circa 1890
Accessories: objectives (2): series I 2/3 0.25 N.A., series I 1/6 0.82 N.A; oculars (2); diaphrams (3); case
Object number: 1196