Test set, research
Use this image
Can I reuse this image without permission? Yes
Object images on the Ingenium Collection’s portal have the following Creative Commons license:
Copyright Ingenium / CC BY-NC-ND (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
ATTRIBUTE THIS IMAGE
Ingenium,
1980.0385.001
Permalink:
Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.
DOWNLOAD IMAGEPURCHASE THIS IMAGE
This image is free for non-commercial use.
For commercial use, please consult our Reproduction Fees and contact us to purchase the image.
- OBJECT TYPE
- MEGOHMMETER
- DATE
- 1936
- ARTIFACT NUMBER
- 1980.0385.001
- MANUFACTURER
- General Radio Co.
- MODEL
- 487-AS2
- LOCATION
- Cambridge, Massachusetts, United States of America
More Information
General Information
- Serial #
- 197
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- CASE, WOOD WITH ALUMINUM PANEL, 2 VACUUM TUBES, POWER TRANSFORMER, PRECISION RESISTORS, ROTARY SWITCH, ZERO SET POTETIOMETER, CALIBRATION POTENTIOMETER/ TWO THUMB SCREW TERMINAL CONNECTOR, TWO KNOBS, TOGGLE SWITCH, INDICATOR LAMP AND 4-1/2" ROUND MICROAMMETER
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 25.3 cm
- Width
- 20.4 cm
- Height
- 14.3 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Energy-electric
- Category
- Measurement
- Sub-Category
- N/A
Manufacturer
- AKA
- General Radio
- Country
- United States of America
- State/Province
- Massachusetts
- City
- Cambridge
Context
- Country
- North America
- State/Province
- Unknown
- Period
- 1936-1960
- Canada
-
USED IN RESEARCH AT NRC - Function
-
USED TO MEASURE CURRENT LEAKAGE IN TRANSFORMER INSULATION, CAPACITORS, INSULATING MATERIAL AND OTHER ELECTRICAL/ELECTRONIC COMPONENTS - Technical
-
Unknown - Area Notes
-
Unknown
Details
- Markings
- PRINTED ON FRONT: 'MEGOHMMETER/ TYPE 487-AS2 SERIAL NO. 197/ GENERAL RADIO CO./ CAMBRIDGE MASS. U.S.A.'/ PLATE: '115 VOLTS/ 25'/ METER: 'MEGOHMS/ GENERAL RADIO CO./ MF'D BY WESTON/ MODEL 643 NO.6052/ GR 588-300'/ DECAL ON FRONT: 'NATIONAL RESEARCH COUNCIL/ RADIO AND EE DIV./ INSTRUMENT NO./ R858'
- Missing
- POWER CORD
- Finish
- LIGHT VARNISH STAIN CASE. SIMULATED BLACK LEATHER GRAIN ENAMEL PANEL. BLACK BAKELITE METER CASE,BLACK KNOBS
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
General Radio Co., Test set, research, circa 1936, Artifact no. 1980.0385, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1980.0385.001/
FEEDBACK
Submit a question or comment about this artifact.
More Like This
1980.0385.001
