Ammeter
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1977.0018.001
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- OBJECT TYPE
- Portable AC/Single range/Rectifier type
- DATE
- 1930
- ARTIFACT NUMBER
- 1977.0018.001
- MANUFACTURER
- Ferranti
- MODEL
- 350P
- LOCATION
- England
More Information
General Information
- Serial #
- 49085
- Part Number
- 1
- Total Parts
- 1
- AKA
- Microammeter
- Patents
- N/A
- General Description
- Molded bakelite case and adjustment screws. Glass window. Metal scale, screws and binding posts.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 9.1 cm
- Width
- 7.3 cm
- Height
- 4.1 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Service-test equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Ferranti
- Country
- England
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Worldwide
- State/Province
- Unknown
- Period
- 1940-1960
- Canada
-
Used for Canadian radio astronomy research at the National Research Council of Canada. - Function
-
Used to measure low levels of AC current in microamperes, over a range of 20 to 6000 Hz. For instance, atmospheric noise and/or radio frequency magnetic waves generated by stars and amplified to a level that could be measured by this meter. - Technical
-
British-made permanent magnet moving coil type AC portable microammeter. This moving coil instrument uses a rectifier to convert the AC current into DC current which it can measure. - Area Notes
-
Unknown
Details
- Markings
- Printed on face: 'FERRANTI/ A.C. MICROAMPERES/ RECTIFIER/ INSTRUMENT/ MADE IN ENGLAND TYPE NO. 350P./ PATENT NO. 285633 VD=0:7/ 20-6000 NO. 49085'
- Missing
- Meter glass, to be reset. Meter defective. May be defective instrument rectifier. From CA of 01/09/2002 by David Daley: No - Complete
- Finish
- Glossy black bakelite case; silver coloured meter face with black calibration.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Ferranti, Ammeter, after 1930, Artifact no. 1977.0018, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1977.0018.001/
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