pancratic illuminator
Datecirca 1936
Inventory Number1997-1-2024
ClassificationMicroscope Light Source
Subject
Maker
Carl Zeiss Jena
1904 - 1948
Maker
Carl Zeiss (company timeline)
founded 1846
Cultural Region
Place of Origin
Dimensionslight source: 7.7 × 21 × 4.9 cm (3 1/16 × 8 1/4 × 1 15/16 in.)
case: 7.1 × 23.6 × 11.2 cm (2 13/16 × 9 5/16 × 4 7/16 in.)
box: 7.6 × 32.4 × 11.7 cm (3 × 12 3/4 × 4 5/8 in.)
case: 7.1 × 23.6 × 11.2 cm (2 13/16 × 9 5/16 × 4 7/16 in.)
box: 7.6 × 32.4 × 11.7 cm (3 × 12 3/4 × 4 5/8 in.)
Material
Accessorieslamps with blackened bulbs (5); filter glasses (3), flat case
Bibliography
DescriptionThis item is a complete Köhler illumination system for numerical aperture (n.a.) from 0.16 to 1.40. It consists of a condensing lens attached to a prism which is attached to an optical tube with a ring that adjusts for numerical aperture.
The instrument is stored in a black wooden box covered with buckram and padded in black velvet. The box holds three filter glasses and five small lamps with blackened bulbs. There is also a small, cylindrical cardboard box that seems to be used to store the lamps.
The instrument is stored in a black wooden box covered with buckram and padded in black velvet. The box holds three filter glasses and five small lamps with blackened bulbs. There is also a small, cylindrical cardboard box that seems to be used to store the lamps.
Signedon prism housing:CARL ZEISS / JENA [in achromat trademark]
on prism housing: Germany
on box: Germany
Inscribedon prism housing: Nr. 22406
Function"Pancratic" is today's "Zoom," except here it refers to the cone of illumination, not the magnification.
ProvenanceBiology Lab, Harvard University
Historical AttributesThis instrument was used in the Biology Lab, Harvard University.
Ernst Leitz (company)
Date: circa 1930
Accessories: Leitz objectives on special mountings (3): p14 mm/ 3b, 3.2x/1, 6a ohne Deckglas Tubusl. 215 mm; small wrenches (5); polarizer; spare beamsplitter glasses; case
Object number: 1999-1-0020f
Accessories: 1box with projection bulb and 1 box with miniature lamps.
Object number: RS0474
Ernst Leitz (company)
Date: 1950
Accessories: Ultropak microscope lamp; sector shutters (2); glass filters (5); driver; spare bulbs (8); boxes (2).
Object number: 2009-1-0070b
Olympus
Date: 1980
Accessories: lamp 6V, 30 W
Object number: 2003-1-0044c
VEB Carl Zeiss Jena
Date: circa 1960
Accessories: condenser turret; colored glass filters (3); clear matte glasses (2); polaroid discs (2); stage clips (4); wrenches (2); empty objective can; extra lids (2); case.
Object number: 1997-1-0009
Spencer Lens Company
Date: circa 1935
Accessories: Spencer Microscope Lamps M-65 Feb.1935 (in instrument file folder)
Object number: 2009-1-0068
Wild Heerbrugg Ltd.
Date: circa 1960
Accessories: glass filters (2)
Object number: 1997-1-2135
Unitron
Date: 1970
Accessories: detachable power cord and lamp cord
Object number: 2003-1-0034
Spencer Lens Company
Date: circa 1940
Accessories: microscope lamp (2009-1-0072)
Object number: 2009-1-0081
Carl Zeiss Jena
Date: circa 1932
Accessories: objectives (4): 3 achr. 8x, 10x, 20x , APO 40; ocular Mobimi K7x; condensor; mechanical stage; stereo set of ocular caps and stop; Abbe condensor; standing case.
Object number: 1370
Charles Collins
Date: circa 1875
Accessories: case
Object number: 1250
John Browning
Date: circa 1880
Accessories: case
Object number: 1193