Calibrator

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Ingenium, 2004.0110.001
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OBJECT TYPE: vibration
DATE: 1968
ARTIFACT NUMBER: 2004.0110.001

MANUFACTURER: GENERAL RADIO CO.
MODEL: 1557-A
LOCATION: Concord, Massachusetts, United States of America

More Information

General Information

Serial #: 1146
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: metal casing & parts/ synthetic controls, meter cover, parts/ rubber feet

Dimensions

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

Length: 19.5 cm
Width: 11.3 cm
Height: 10.6 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: Concord

Context

Country: Canada
State/Province: Nova Scotia
Period: circa1968
Canada: An American made instrument of the early 1970's used at DREA (Defence Research Establishment Atlantic), now DRDC Atlantic (Defence R & D Canada - Atlantic), a department of National Defence. Canada's Defence Research Board was founded in 1940 to provide scientific support to all three armed services; in 1967 the Atlantic component in Dartmouth, NS became DREA. The current mandate of DRDC Atlantic is to conduct research and development in underwater and marine military technology for Canada's Navy and Air Force (Ref. 3). This instrument was put into operation 1968.11.06 as part of the Ship's Operations section's equipment inventory and later became part of the Equipment Pool inventory at the Dartmouth facility (Ref. 1).
Function: An instrument used to align & correct vibration measuring instruments.
Technical: This instrument first appeared in GR's 1961 catalogue & was still being made in the mid 1970s. It was designed for calibrating vibration pick-ups, accelerometers, vibration meters & other vibration-measuring systems that use small, piezoelectric accelerometers as the sensing element. It is a small, portable, battery-operated unite consisting of a transistorized electromechanical oscillator & a cylindrical shaker (Ref. 2).
Area Notes: Unknown

Details

Markings: white lettering on casing top reads "GENERAL RADIO COMPANY/ CONCORD MASSACHUSETTS U.S.A." & "VIBRATION CALIBRATOR/ TYPE 1557-A SERIAL 1146"/ white lettering for control functions on casing top/ black lettering on meter face
Missing: appears complete
Finish: textured grey painted casing with brushed metal edging/ brushed metal parts/ grey controls/ grey & colourless transparent meter casing, white meter dial/ black feet
Decoration: red & gold synthetic applique logo reading "GR" on casing top

CITE THIS OBJECT

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

GENERAL RADIO CO., Calibrator, 1968, Artifact no. 2004.0110, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/2004.0110.001/

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