Slide rule

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Ingenium, 1989.0248.001
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OBJECT TYPE: SPECIAL PURPOSE/FREQUENCY
DATE: 1965
ARTIFACT NUMBER: 1989.0248.001

MANUFACTURER: DND DRB DRTE
MODEL: ALOUETTE/ISIS
LOCATION: Ottawa, Ontario, Canada

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: FERROUS METAL RULE/ NON-FERROUS METAL GRAPHPLATE (ALUMINUM?) & PARTS (BRASS?)/ FIBRE CORD

Dimensions

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

Length: 34.0 cm
Width: 26.6 cm
Height: 5.1 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Mathematics
Category: Calculating devices
Sub-Category: N/A

Manufacturer

AKA: Defence CA
Country: Canada
State/Province: Ontario
City: Ottawa

Context

Country: Canada
State/Province: Ontario
Period: C.1965 +
Canada: A DEVICE DEVELOPED AT THE CANADIAN AGENCY DEFENSE RESEARCH TELECOMMUNICATIONS ESTABLISHMENT, THE PREDECESSOR OF CRC, BUILT IN THE DRTE WORKSHOP WHERE COMPONENETS OF THE ALOUETTE SATELLITE HAS BEEN MADE. IT WAS USED TO PROCESS SCIENTIFIC DATA FROM THE CANADIAN ALOUETTE & ISIS SATELLITES.
Function: USED TO CALCULATE FREQUENCIES CHARACTERISTIC OF THE IONOSPHERE, WHICH APPEARED ON THE IONOGRAMS PRODUCED BY A SATELLITE IONOSPHERIC SOUNDER
Technical: A SPECIALIZED SLIDE RULE DEVELOPED TO FACILITATE THE PROCESSING OF IONOGRAMS. PREVIOUSLY, THE CALCULATIONS WERE DONE LABORIOUSLY BY HAND. HAGG GENERATED THE EQUATIONS THAT DEFINE THE CURVES & LINES ON THE SLIDE RULE
Area Notes: Unknown

Details

Markings: GRAPH PLATE INCISED WITH BLACK CURVED LINES & THIER IDENTIFIERS `fN', `fH', `fZS', `fT', & `fxs'/ RULE INCISED WITH SCALE OF DIMINISHING DIVISIONS & MARKED IN BLACK FOR 1 TO 9 & 1 TO 10.
Missing: N/A
Finish: PLATED RULE/ BRASS COLOURED KNOBS/ BRUSHED GRAPH PLATE & PARTS/ BROWN CORD
Decoration: N/A

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

DND DRB DRTE, Slide rule, circa 1965, Artifact no. 1989.0248, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1989.0248.001/

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