History of the manufacturer
Leeds & Northrup; Philadelphia
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| Name: | Leeds & Northrup; Philadelphia (USA) |
| Abbreviation: | leedsnorth |
| Products: | Model types Others |
| Summary: |
Leeds & Northrup Company; Philadelphia, Pennsylvania. Hersteller von Galvanometern, Potentiometern, Brücken und anderen Präzisionsgeräten für Laboratorien. |
| Founded: | 1899 |
| Production: | 1899 - |
| History: |
Leeds & Northrup, was founded in 1899, in Philadelphia, Pennsylvania, by Morris E. Leeds. Originally known as Morris E. Leeds & Company and produced electrical measuring instruments for laboratory and testing use. The new firm made galvanometers, potentiometers, bridges, and other laboratory-type equipment of high quality. In 1903, Mr. Leeds took Dr. Edwin F. Northrup into partnership and the business was incorporated under the name of Leeds & Northrup.
Leeds & Northrup was acquired in 1978 by General Signal Corporation of Stanford, Connecticut. In 1980, the name of the division was changed from Expendable Devices to Leeds & Northrup Metallurgical Products. In 1995, General Signal sold the Metallurgical Products division to Heraeus Holding, GmbH of Hanau, Germany.
More Infos can be found at http://www.l-n-metprod.com/interior_h2.html
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This manufacturer was suggested by Alexander Kusdas.
Some models:
| Country | Year | Name | 1st Tube | Notes |
|---|---|---|---|---|
| USA | 60 | Wheatstone Bridge 5430-AM-1 | Wheatstonesche Messbrücke, speziell für die Messung und Fehlerortung an Fernmeldeleitungen... | |
| USA | 30 | Multiple Range Potentiometer Indicator | Leeds & Northrup Multiple Range Potentiometer Indicator. | |
| USA | 16 | Ayrton Universal Shunt 2164 | Western Electric - 1916 Electrical Supply Year Book: 'Model 2164 - Ayrton Universal S... | |
| USA | 55 | Voltage Divider 100000 ohms Cat. No. 4395 | ||
| USA | 15 | Battery Charger | Device for charging storage batteries. Unit contained in a 5 gallon salt glazed c... | |
| USA | 26 | 4258 | The Kohlrausch Slide Wire, no. 4258, cost $100.00 in 1926. It has "end coils tha... | |
| USA | 70 | Amplifier 101133 | 12BH7 | Most probably just for switching purpose. No AF. |
| USA | 30 | Galvanometer 2370 | ||
| USA | 50 | 5430 A , Test set I-49 | Portable Wheatstone bridge, with internal batteries or optional external battery. No... | |
| USA | 20 | Galvanometer No 81 | ||
| USA | 65 | Wheatstone Bridge 5305 Type S-2 | Wheatstonesche Messbrücke, speziell für die Messung und Fehlerortung an Fernmeldeleitun... | |
| USA | 30 | Potentiometer K2 | Potentiometer type K2. Bakelite case with wooden base. Measuring instrument used ... |
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