Meter, sound level

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Ingenium, 1995.1572.001
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OBJECT TYPE
N/A
DATE
1960–1969
ARTIFACT NUMBER
1995.1572.001
MANUFACTURER
General Radio Co.
MODEL
1551-A
LOCATION
Cambridge, Massachusetts, United States of America

More Information


General Information

Serial #
490
Part Number
1
Total Parts
2
AKA
N/A
Patents
N/A
General Description
METAL CASING WITH SYNTHETIC ENDS/ METAL & SYNTHETIC CONTROLS & WORKING PARTS/ SYNTHETIC POWER CORD/ GLASS? METER WINDOW

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
27.5 cm
Width
19.2 cm
Height
17.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Physics
Category
Electronics
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
INSTRUMENT USED TO MEASURE SOUND LEVELS FROM 24 TO 14O DB BY READING, IN TERMS OF STANDARD REFERENCE LEVEL, SOUND LEVEL AT ITS MICROPHONE. IT WAS INTENDED FOR USE IN DETERMINING NOISE LEVELS OF ENGINES & MACHINERY, INVESTIGATING ACOUSTICAL PROPERTIES OF STRUCTURES & MATERIALS, & IN LABORATORY.
Technical
EXAMPLE OF ACOUSTICAL TEST EQUIPMENT OF 1960'S, PART OF EQUIPMENT OF AUDIOVISUAL PRODUCTION FACILITY.
Area Notes
Unknown

Details

Markings
INCISED WHITE LETTERING READING "SOUND-LEVEL METER/ TYPE NO. 1551-A SERIAL NO. 490 [.2 SERIAL NO. 1937]/ GENERAL RADIO CO./ CAMBRIDGE MASS., U.S.A."/ BLACK LETTERING ON METER READS "GENERAL RADIO CO./ MFD. BY WESTON/ MODEL 301 G.R. 488-301A"/ INCISED WHITE LETTERING FOR CONTROL FUNCTIONS/.1 LABEL ON COVER INTERIOR READS "TYPE 1560-P/ SERIAL 2077/ SENS -59.7/ IMPEDANCE 475 pF/ CALIBRATION TRACEABLE TO NATIONAL BUREAU OF STANDARDS/ GENERAL RADIO COMPANY/ CONCORD MASSACHUSETTS USA"; LABEL IDENTICAL ON.2 EXCEPT "TYPE 1560-P3/ SERIAL 3221/ SENS 460 pF"/.2 LABEL READING "CALIBRATED/ DATE APRIL 1971"
Missing
.2 MISSING MICROPHONE PART
Finish
TEXTURED BLACK PAINTED CASING EXTERIOR WITH BLACK END PIECES/ BLACK IMITATION LEATHER INTERIOR PANEL/ FLAT BLACK PAINTED LID INTERIOR/ BLACK CONTROLS, DIAL CASING, FEET, POWER CORD/ PLATED & METALLIC PARTS/ COLOURLESS TRANSPARENT GLASS
Decoration
MOULDED "GR" LOGO ON SYNTHETIC CASING ENDS/.1 LABEL READING "NATIONAL FILM BOARD CANADA OFFICE NATIONAL DU FILM"

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If you choose to share our information about this collection object, please cite:

General Radio Co., Meter, sound level, between 1960–1969, Artifact no. 1995.1572, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1995.1572.001/

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