large monocular compound microscope
Datecirca 1875
Inventory Number1159
ClassificationMicroscope
Subject
Maker
Spencer Lens Company
1895 - 1945
Maker
Robert B. Tolles
1823 - 1883
Owner
Daniel E. Dudley
1820 - 1909
Owner
Warren Anatomical Museum
founded 1847
Collector
Ernst-Lewis Collection of Microscopes
Cultural Region
Place of Use
Dimensionsmicroscope: 38.7 × 16.5 × 24 cm (15 1/4 × 6 1/2 × 9 7/16 in.)
case: 29 × 19.5 × 27.6 cm (11 7/16 × 7 11/16 × 10 7/8 in.)
case: 29 × 19.5 × 27.6 cm (11 7/16 × 7 11/16 × 10 7/8 in.)
Material
Accessoriesobjectives (6): Tolles 8/10 " dated 5/1/1863, 2 marked Spencer on can, 1 European shape "5", 2 other; oculars (2); polarizer set; box of general subjects slides; substage mirror; magnifier; case
Bibliography
DescriptionThis is an unsigned compound monocular microscope, designed in the style of the Ross microscopes. The isntrument is constructed of brass and plated in nickel, with the exception of the stage and condenser, which are blackend. It has a straight monocular body supported by a horizontal bracket with the fine adjustment knob on top. The coarse focus is by rack and pinion.
The microscope post is hinged between two flat pillars, which are mounted on a tripod base. The square stage is equipped with stage clips and has a joystick enabling x-y motion. Located beneath the stage is a condenser mount (condenser is missing), diaphragm wheel, and a substage mirror.
Accessories include a magnifier which attaches to the stage and a custom made compact case of thick wood.
The microscope post is hinged between two flat pillars, which are mounted on a tripod base. The square stage is equipped with stage clips and has a joystick enabling x-y motion. Located beneath the stage is a condenser mount (condenser is missing), diaphragm wheel, and a substage mirror.
Accessories include a magnifier which attaches to the stage and a custom made compact case of thick wood.
In Collection(s)
Signedunsigned
ProvenanceDr. Daniel E. Dudley, Cambridge, MA; Dr. Abner Post; his daughter Mrs. Stephen A. Brood; gift to Warren Anatomical Museum, (inv. no. M6275), February 6 1943; Ernst-Lewis Collection of Microscopes (inv. no. 159), Harvard Medical School.
Historical AttributesThis instrument was owned by Dr. Daniel E. Dudley of Cambridge, MA. A note by Dr. Lewis in the file gives this provenance. The file also contains Dr. Dudley's diplomas and papers, including his visa to Mexico and the Philippines.
Andrew Ross
Date: circa 1850
Accessories: objectives (5); condenser lens; eyepiece bracket (1) with eyepieces (4); polarizing lens; reducing ring; stage forceps; case
Object number: 1035a
Andrew Ross
Date: circa 1850
Accessories: objectives (5); condenser lens; eyepiece bracket (1) with eyepieces (4); polarizing lens; reducing ring; stage forceps; case
Object number: 1035b
Spencer Lens Company
Date: circa 1940
Accessories: oculars (3): 6x, 10x, and pinhole; objectives (4): B&L 45x, AO 40x, Spencer 10x, B&L 16 mm; quick-change objective holders (2); quick-change centerable objective holders (3); petrographic substage condenser and polarizer; Amici-Bertrand lens; Polaroid analyzer; quartz wedge; full-wave plate; blue filters; case, key
Object number: 1378a
Spencer Lens Company
Date: circa 1932
Accessories: 10x ocular; double nosepiece; Spencer objectives (2):16mm, 4mm
Object number: 1314
Spencer Lens Company
Date: circa 1920
Accessories: objectives (5 pairs): 55, 48, 40, 32, 25 mm; oculars (3 pairs): 10x, 6x, 4x; hand rests (2); stage with wheel; large wooden stage; case
Object number: 1321
Spencer Lens Company
Date: circa 1924
Accessories: spencer compensating oculars (2): 10x; triple nosepiece; Spencer objectives (3): 16mm, 4mm, 1.8mm
Object number: 1315
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
Spencer Lens Company
Date: circa 1928
Accessories: ocular (1): 10x; objectives (2): 4mm,16mm; condenser with iris; mirror
Object number: 1996-1-0342
E. Hartnack & A. Prazmowski
Date: circa 1880
Accessories: objectives in green leather box (5): 2, 4, 6, 7, and unmarked; objectives in brown box (2): 2, 3; oculars (5); 1, 2, 3, 4, 5; polarizing eyepiece and substage apparatus; substage condenser; substage cup diaphragms (4); slider with sleeve to hold substage accessories; large bull's eye condenser with stand; aperture-stop rotating wheel; blue filters (3); flat case; case keys (2).
Object number: 1145a
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
Spencer Lens Company
Date: 1930-1933
Accessories: objectives (3) 1.8 mm, 4 mm, 16 mm; paired oculars: 10x; monocular tube; mechanical stage; spare stage clips; blue filter; case; key.
Object number: 1996-1-0338
Spencer Lens Company
Date: circa 1937
Accessories: objectives in quick-release mounts (3): Spencer 6x and 20x, B&L 45x; full wave plate; quartz wedge; rotary vernier stage; Abbe condenser; Ahrens prism polarizer; case
Object number: 1320