Ross polarizing compound binocular microscope
Datecirca 1878
Inventory Number1200a
ClassificationMicroscope
Subject
Maker
Ross and Company
1859 - 1897
Place of Origin
Dimensions44.5 × 18.8 × 41.5 cm (17 1/2 × 7 3/8 × 16 5/16 in.)
Material
AccessoriesRoss objective 4/10"; paried oculars B; double diaphragm disc with 8 apertures each; diaphragm disk ; polarizer; lens slide for stage; box
DescriptionThis is a Ross polarizing compound binocular microscope. The heavy brass instrument is equipped with a set of long binocular eyepiece tubes with moveable width spaced from a sliding track. There is rack and pinion for the coarse adjustment and a fine adjustment knob located between the binocular track and tube.
The microscope has a round rotating stage with mechanical motions. Substage equipment includes a condenser, a polarizer unit, and an adjustable mirror on a round tube. The entire instrument is supported by a tripod base.
There is an accompanying mahogany parts box with minimal accessories inside.
The microscope has a round rotating stage with mechanical motions. Substage equipment includes a condenser, a polarizer unit, and an adjustable mirror on a round tube. The entire instrument is supported by a tripod base.
There is an accompanying mahogany parts box with minimal accessories inside.
Signedon foot: ROSS London
on base of tube: WENTHAM'S BINOCULAR / by Ross, London
Inscribedon foot: 4020
Curatorial RemarksThe note on the file card reads: "In exhibit case Geology Building 14."
Historical AttributesThis instrument was used for mineralogy in the Geology Department.
Ross and Company
Date: circa 1878
Accessories: Ross objective 4/10"; paried oculars B; double diaphragm disc with 8 apertures each; diaphragm disk ; polarizer; lens slide for stage; box
Object number: 1200b
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
Ross and Company
Date: dated 1871
Accessories: objectives (2); pair of oculars "B"; condensor; mechanical stage; standing case
Object number: 1135a
Ross and Company
Date: circa 1875
Accessories: Ross oculars (2): C, D; anonymous objective on the tube; Ross objective 1/2 "; standing case
Object number: 1138
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
Benjamin Wood
Date: 1820
Accessories: 10 objectives, numbered 1-10 (caps on 1 and 2); 4 objectives with lieberkuhns (one lens missing); 2 oculars; 3 simple lenses in eye cups; diaphragm cone; live box; spring stage; three-wing stage; double-convex lens on rod; simple-lens carrier on an arm; ivory black/white disk; 1 ivory disk with cork; 3 flat glass disks of differing sizes; 1 large glass disk in threaded brass rim; 1 watch glass; 3 large glass, magnifying lenses, one tinted green; 2 small magnifying glasses; stage condensor; fish plate; 2 stage forceps; 1 stage 3-pronged gripper; tweezers; 3 ivory handled knives for preparations; 10 small and 3 medium ivory slides of transparent specimens; 3 ivory slides of opaque specimens; 3 boxwood slides of transparent specimens; 1 brass wet-cell slide with 4 apertures for preparations; 2 cylindrical ivory boxes with mica cover slips and snap rings; wrench; chamois; flat case with sockets for the above; key.
Object number: 1002
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
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
Ross and Company
Date: 1871
Object number: 1135b
R. & J. Beck
Date: 1876
Accessories: oculars (2) in microscope; Darker's selenite retarding filters (3); wheel diaphragm; mechanical rotary stage; stage slider. Other accessories are in the case (1122b), including monocular draw tube; oculars (3); objectives in cans (5); empty can; Lieberkühn; polarizing set; slides; camera lucidas (2); etc.; plus a Beck patent substage condenser (1122c); and apertometer (1122d).
Object number: 1122a
Joseph Zentmayer
Date: circa 1875
Accessories: monocular body tube; 1 set of paired eyepieces; oculars (3); objective in canister: 8/10; wheel diaphragm; glass window; case; key.
Object number: 1073