Bridge, impedance
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1995.1575.001
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- OBJECT TYPE
- 4 ARM
- DATE
- 1960–1969
- ARTIFACT NUMBER
- 1995.1575.001
- MANUFACTURER
- General Radio Co.
- MODEL
- 650-A
- LOCATION
- Cambridge, Massachusetts, United States of America
More Information
General Information
- Serial #
- 11398
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- WOOD CASING/ SYNTHETIC COVERED METAL CONTROL PANEL FORMING TOP/ SYNTHETIC & METAL CONTROLS/ SYNTHETIC GALVANOMETER WINDOW/ RUBBER? FEET
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 48.0 cm
- Width
- 30.5 cm
- Height
- 23.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Sound
- Sub-Category
- N/A
Manufacturer
- AKA
- General Radio
- Country
- United States of America
- State/Province
- Massachusetts
- City
- Cambridge
Context
- Country
- Canada
- State/Province
- Quebec
- Period
- 1960'S+
- Canada
-
EQUIPMENT USED IN ENGINEERING DEPT. OF NATIONAL FILM BOARD OF CANADA. CREATED IN 1939, NFB IS PUBLIC AGENCY THAT PRODUCES & DISTRIBUTES FILMS & OTHER AUDIOVISUAL WORKS WHICH REFLECT CANADA. AT ONE TIME WELL FUNDED BY GOV'T, NFB HAD GOOD QUALITY EQUIPMENT BY WELL KNOWN MFRS. - Function
-
GENERALLY, INSTRUMENT USED TO MEASURE RESISTIVE & REACTIVE COMPONENTS OF UNKNOWN IMPEDANCE. THIS ONE MEASURED INDUCTANCE & STORAGE FACTOR OF COILS, CAPACITANCE & DISSIPATION OF CAPACITORS, A-C & D-C RESISTANCE OF RESISTORS. IN LABORATORY IT WAS USED TO MEASURE CIRCUIT CONSTANTS IN EXPERIMENTAL EQUIPMENT, TEST PRELIMINARY SAMPLES, ETC. - Technical
-
EXAMPLE OF ACOUSTICAL TEST EQUIPMENT OF 1960'S, PART OF EQUIPMENT OFAUDIOVISUAL PRODUCTION FACILITY. - Area Notes
-
Unknown
Details
- Markings
- INCISED WHITE LETTERING ON CONTROL PANEL READS "IMPEDANCE BRIDGE/ TYPE NO. 560-A SERIAL NO. 11398/ GENERAL RADIO CO./ CAMBRIDGE MASS. U.S.A." & FOR CONTROL FUNCTIONS/ BLACK LETTERING ON METER READS "WESTON ELEC. INST. CORP. NEWARK N.J. U.S.A./ GALVANOMETER/ GENERAL RADIO CO./ MADE BY/ WESTON/ MODEL 1301 R-588-306-A/ 65 NOMINAL 161865"
- Missing
- APPEARS COMPLETE From CA of 11/15/2001 by Matthew Bruce: Yes - Missing power cord.
- Finish
- WOOD STAINED BROWN & COATED/ BLACK TEXTURED COVERING ON CONTROL PANEL/ BLACK SYNTHETIC CONTROLS/ WHITE SYNTHETIC LIGHT/ PLATED & METALLIC PARTS/ BLACK PAINTED METAL DIALS/ COLOURLESS & TRANSPARENT WINDOW/ BLACK FEET
- Decoration
- INCISED WHITE MFR.'S "GR" LOGO ON CONTROL PANEL
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
General Radio Co., Bridge, impedance, between 1960–1969, Artifact no. 1995.1575, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1995.1575.001/
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