compensating eyepieces 20X
Datecirca 1960
Inventory Number1997-1-2107
ClassificationMicroscope Optics
Subject
Maker
Wild Heerbrugg Ltd.
1921 - 1989
Supplier
Wild Heerbrugg Instruments Inc.
founded circa 1955
Cultural Region
Place of Origin
Dimensionseach: 5.1 × 2.8 × 2.8 cm (2 × 1 1/8 × 1 1/8 in.)
Material
DescriptionTwo compensating eyepieces 20X.
In Collection(s)
Signedon black end: WILD/ HEERBRUGG
Inscribedon black end: 20xK
Curatorial RemarksThe original invoice for the Wild M20 compound microscope (in file) contains 152 items. Most accessories are catalogued under CHSI inventory numbers running from 1997-1-2062 to 1997-1-2223, and are stored separately. The microscope stand is 1997-1-0722 and the case is 1997-1-0723. All items are linked together in the Object Package "Wild M20."
Historical AttributesOn September 2, 1960, David P. Wheatland ordered a Wild research microscope, model M20 KGS along with a comprehensive assortment of accessories and nearly all the attachments offered. He told the Wild vendor that:
"It is intended to use all thse for comparison, demonstration, and some for investigation. Eventually perhaps other basic instruments may be ordered and the accessories distributed among them. We are anxious therefore to have the list as complete as possible to make all the tests and optical experiments."
DPW also ordered a complete set of brochures for the library.
The initial cost of the purchase was $6000.
Zeiss-Opton Optische Werkstätte Oberkochen GmbH
Date: circa 1953
Object number: 2003-1-0002d
Wild Heerbrugg Ltd.
Date: circa 1960
Object number: 1997-1-2112
Wild Heerbrugg Ltd.
Date: circa 1960
Accessories: three graticules (separately cataloged as 1997-1-2124, 1997-1-2125, and 1997-1-2126).
Object number: 1997-1-2113