Object Name:  Zeiss stand Ic photomicrographic compound microscope
Inventory Number:  1308a
Alternate Numbers:
Stand Ic: Model Number
37209: Serial Number

Classification:  Microscope


Maker:  Carl Zeiss (corporate history)
Maker:  120 items related to this constituent
Maker:  Bausch & Lomb Optical Company
Maker:  126 items related to this constituent
Maker:  Ernst Leitz (company)
Maker:  80 items related to this constituent
Maker:  Carl Zeiss, Optische Werkstätte, Jena
Maker:  41 items related to this constituent


Geography:
Place of Origin: Jena
Cultural Region: Germany

Date:  circa 1902


Material:
aluminum, brass, glass, wood
Subject:
biology, medicine, microscopy, optics, photography, physics

Description:  This object (1308a) is a Zeiss microscope with a stand Ic for photomicrography and projection.

It is designed in the continental style with a hole in the arm. It has a large stand on a horseshoe-shaped base, and a large diameter aluminum body (painted with black enamel). It is also equipped with a triple revolving nosepiece. Coarse focus is by rack and pinion operated by large aluminum knobs. The fine focus (described as "Berger's micrometer movement") is by a vertical screw inverted and driven by a worm and worm gear with horizontal knobs projecting right and left below the hand-hole in the arm. Intervals are given to 0.002 mm.

The microscope has the Zeiss "photo-micrographic stage" in which very slow motion can be imparted to the specimen while it is simultaneously rotated around the optical axis of the microscope. This rotating stage is circular and made of brass. It is moved in two directions at right angles to each other by means of two coaxial milled heads. Positions are read off of 2 separate vernier scales.

Below the stage is frame moved by rack work. It carries an Abbe condenser and iris diaphragm with traverse racking on a swing-out mount. The substage mirror is missing.

Eyepieces include compensating eyepieces 4, 12, 18 and regulars 1 and 5. One is in the instrument tube and the others are in a pull-out tray in the standing case.

Objectives included with the microscope are signed and marked as follows:

C. ZEISS: a* with rotating ring to double the magnifying power (in nosepiece)

C. ZEISS: DD (in canister marked "C. ZEISS / JENA")

C. ZEISS / JENA: apochromat 3 mm Apert. 0.95, Tubusl. 160 mm, with correcting collar (in canister marked "Carl Zeiss, Jena.")

Carl Zeiss Jena: Planar 1' 4.5 R 35 mm, Serie 1a Nr. 2 microplanar objective (in parts box)

unsigned: DOPPEL-ANASTIGMAT 75 m/m microplanar objective (in parts box)

Ernst Leitz Wetzlar: 1/7 a Oel Immersion (in canister marked "7 / E. Leitz / Wetzlar")

BAUSCH & LOMB OPTICAL CO.: 1/2 inch illuminating objective--i.e., with side window onto prism for vertical illumination of specimen (according to the Tolles pattern) (in canister marked "BAUSCH & LOMB OPTICAL CO. / [words obscured by sticker] / NEW YORK CITY")

The canisters are stored in a sliding tray in the instrument case.

Other accessories in the case include black sleeves and collars for establishing the connection between the optical tube of the microscope and the camera. The large funnel-shaped sleeve is unmarked. The smaller sleeve / collar is marked: Pl. 35 mm / " 50 ". The other collar is marked: Pl. 75 mm.

A fitted wooden parts box has a sliding cover. It holds the two microplanar objectives with part of a leather case, a split nickel ring, a rusty Zeiss key, a rolled up piece of paper indicating an auxiliary lens for this Zeiss microscope with 32 mm focus (signed by D. W. M.), and a small leather box with an object-slide micrometer signed by "E. Leitz Wetzlar" (1308b).

The instrument case holds a "double bottle" (1308c) for cedarwood oil and xylol for use with oil immersion lenses; a cardioid condenser made by Carl Zeiss Jena (1308d); and an erecting prism by Ernst Leitz (1308e).

The standing case has the Zeiss herringbone dovetailing and a fine door with inset panels arranged so that the wood grain forms a diamond. The padded retaining bar for the microscope is still present.

All in all, a particularly handsome cabinet and instrument, both in super condition with mixed accessories.

Accessories:  oculars (5); objectives (5); microplanar objectives (2); iris diaphragm; abbe condenser; collars and sleeves for photography; parts box; Leitz object micrometer (1308b); cardioid condenser (1308d); immersion oil bottle (1308c) ; Leitz erecting prism (1308e); standing case


Signed:  on tube, engraved: Carl Zeiss / Jena

on oculars in cursive lettering: Carl Zeiss, Jena.

on objectives a*, DD: C. ZEISS

on canister for DD: C. ZEISS / JENA

on objective 3 mm apochromat: C. ZEISS / JENA

on canister for 3 mm apochromat: Carl Zeiss, Jena

on microplanar objective for 35 mm: Carl Zeiss Jena

on objective for 1/7 a oil immersion: Ernst Leitz Wetzlar

on its canister: E. Leitz / Wetzlar

on 1/2 in illuminating objective: BAUSCH & LOMB OPTICAL CO.

on its canister: BAUSCH & LOMB OPTICAL CO. / [words obscured by sticker] / NEW YORK CITY

Inscribed:  on tube: No. 37209

on heel of foot: I c

Provenance:  Jefferson Laboratory Preparation Room of the Physics Department, Harvard University

Historical Attributions:  This instrument was used in Jefferson Laboratory prep room of the Harvard Physics Department. The microscope, eyepieces, and objectives were found together. Other components and accessories were gathered from the prep room to make up this outfit.

Bausch & Lomb catalog for 1889, p. 43 offers "illuminating objectives" of a 1/2 inch focus for $20 (42°) to $28 (65°). "These objectives are provided," the firm said, "with an illuminating prism on the plan introduced by Mr. Tolles."