mask with rectangular opening

Datecirca 1960

Inventory Number1997-1-2201

ClassificationMicroscope Accessory

Subject

Maker Wild Heerbrugg Ltd. 1921 - 1989

Supplier Wild Heerbrugg Instruments Inc. founded circa 1955

Cultural Region

Place of Origin

Dimensions0.1 × 9.5 × 7.6 cm (1/16 × 3 3/4 × 3 in.)

Material

DescriptionA rectangular metal mask with 1-3/8 x 2-3/8 inch opening.

In Collection(s)

Wild M20 Compound Microscope

Signedunsigned

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." This particular item is not found on original invoice. This is possibly an adapter for a different-sized film for the photomicrographic camera [1997-1-2148]. This item was added manually to invoice. It does not have a part number of its own.

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.