Wild adjustable low-voltage microscope lamp with transformer
Date: circa 1960
Inventory Number: 1997-1-2135
Classification: Microscope Light Source
Subject:
Maker: Wild Heerbrugg Ltd. (1921 - 1989)
Maker: Neuberger (1904 - 1998)
Supplier: Wild Heerbrugg Instruments Inc. (founded circa 1955)
Cultural Region:
Place of Origin:
Dimensions:
lamp with transformer: 30.5 x 18 x 15 cm (12 x 7 1/16 x 5 7/8 in.)
box: 33 × 20 × 15.9 cm (13 × 7 7/8 × 6 1/4 in.)
Accessories: glass filters (2)
DescriptionThis is a low-voltage lamp on an adjustable stand plus its transformer.
The lamp housing has heat fins. There are centering screws for the bulb holder. The front of the housing has slots for inserting filters. Additional acessories for the lamp include a ground glass and a blue daylight filter. The pair are stored in a cardboard box. (Spare filters are cataloged separately as 1997-1-2151 and 1997-1-2152).
The lamp stand is designed so that the transformer will sit on the base underneath the lamp. The base is of cast metal with a black finish. The upright rod is aluminum.
The lamp's electrical cable has two banana plugs that are inserted into a socket on the front of the transformer. The transformer is a gray metal box with air holes on the sides. On the left side is a dial for selecting the input voltage from 110V to 250V. On the right had side is a toggle switch and a knob to adjust the output voltage. A voltmeter is on top of the box and divided 0-10.
The bottom of this transformer is stamped,"Kontrolliert."
The transformer has attached to it a small instructions sheet that is in German, French, English, and Spanish. (It is stored in the file.)
The lamp housing has heat fins. There are centering screws for the bulb holder. The front of the housing has slots for inserting filters. Additional acessories for the lamp include a ground glass and a blue daylight filter. The pair are stored in a cardboard box. (Spare filters are cataloged separately as 1997-1-2151 and 1997-1-2152).
The lamp stand is designed so that the transformer will sit on the base underneath the lamp. The base is of cast metal with a black finish. The upright rod is aluminum.
The lamp's electrical cable has two banana plugs that are inserted into a socket on the front of the transformer. The transformer is a gray metal box with air holes on the sides. On the left side is a dial for selecting the input voltage from 110V to 250V. On the right had side is a toggle switch and a knob to adjust the output voltage. A voltmeter is on top of the box and divided 0-10.
The bottom of this transformer is stamped,"Kontrolliert."
The transformer has attached to it a small instructions sheet that is in German, French, English, and Spanish. (It is stored in the file.)
In Collection(s)
Signedon top of lamp: WILD / HEERBRUGG / SWITZERLAND
on back of transformer: made in Switzerland
on transformer meter: [logo of N with electrical bolts inside an O] / Neuberger
on back of transformer: made in Switzerland
on transformer meter: [logo of N with electrical bolts inside an O] / Neuberger
Inscribedon transformer plaque: Type HET 4/11
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.
"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.
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."
The transformer is almost identical to 1997-1-2145, except that the surface of this transformer is flat metal, while the other transformer is marbled.
For further information about this lamp and transformer, see Prospectus Mi 632.
The transformer is almost identical to 1997-1-2145, except that the surface of this transformer is flat metal, while the other transformer is marbled.
For further information about this lamp and transformer, see Prospectus Mi 632.
Primary SourcesWild Heerbrugg, General Purpose and Research Microscope, WILD M20, pamphlet Mi 604 e (Heerbrugg, Switzerland, 1956).