Calculator

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Ingenium, 2000.0149.001
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OBJECT TYPE: MANUAL
DATE: 1970
ARTIFACT NUMBER: 2000.0149.001

MANUFACTURER: English Electric Valve Co. Ltd.
MODEL: EEV CALCULATOR
LOCATION: Chelmsford, England

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: .1 PLASTIC/.2 PAPER WALLET

Dimensions

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

Length: 21.5 cm
Width: 15.5 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Vacuum Tubes
Category: Miscellaneous
Sub-Category: N/A

Manufacturer

AKA: English Electric
Country: England
State/Province: Unknown
City: Chelmsford

Context

Country: Unknown
State/Province: Unknown
Period: 1970+
Canada: DONATED BY CANADIAN BRANCH OF BRITISH VACUUM & ELECTRONIC TUBE MFR. MARCONI APPLIED TECHNOLOGIES, WHICH BEGAN IN 1947 AS ENGLISH ELECTRIC VALVE CO. IN 1988 IT FORMALLY CHANGED ITS NAME TO EEV LTD., IN 1999 TO MARCONI APPLIED TECHNOLOGIES & IN 2002 IT BECAME E2V TECHNOLOGIES.
Function: MANUAL CALCULATOR USED TO CALCULATE OPERATING CONDITIONS OF CLASS C AMPLIFIERS & OSCILLATORS FROM CONSTANT CURRENT CURVES.
Technical: Unknown
Area Notes: Unknown

Details

Markings: .1 RED LETTERING READING "THE EEV CALCULATOR FOR CLASS C/ AMPLIFIERS & OSCILLATORS" &"English Electric Valve Company Limited/ Chelmsford, Essex, England/ Printed in England"/.2 BLACK LETTERING ON FRONT COVER READS "ENGLISH/ ELECTRIC/ VALVE/ CO. LTD./ Calculator - Triodes and Tetrodes" & "EE" LOGO; BLACK LETTERING INSIDE READS "English Electric Valve Company Limited/ Chelmsford, Essex, England CM1 2QU"
Missing: APPEARS COMPLETE
Finish: .1 COLOURLESS, ALMOST TRANSPARENT/.2 RED, WHITE, CHARCOAL GREY EXTERIOR; WHITE INTERIOR & SHEETS
Decoration: ILLUSTRATION OF SAMPLE CALCULATION ON FRONT

CITE THIS OBJECT

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

English Electric Valve Co. Ltd., Calculator, 1970, Artifact no. 2000.0149, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2000.0149.001/

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