Measure, frequency

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Ingenium, 2006.0048.001
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OBJECT TYPE: RADIO
DATE: 1954–1966
ARTIFACT NUMBER: 2006.0048.001

MANUFACTURER: Keuffel & Esser
MODEL: Unknown
LOCATION: United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: tape measure
Patents: N/A
General Description: metal & synthetic components

Dimensions

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

Length: 8.0 cm
Width: 7.6 cm
Height: 2.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Radio
Sub-Category: N/A

Manufacturer

AKA: Keuffel Esser
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: Unknown
State/Province: Unknown
Period: Mid 1950s to early 1970s.
Canada: Detection of radio interference and the precise measurement of the field intensity of radio transmissions at specific frequencies was essential for government regulation of the radio spectrum in order to eliminate interference between users.
Function: Used to determine at what wavelength (or frequency) of radio signal a dipole antenna will resonate.
Technical: An accessory of the Stoddart NM-30A Radio Interference- Field Intensity Meter, the tape was used to measure the length of an adjustable dipole antenna in order to tune it to the proper frequency. The scale on the tape is marked in Megacycles (now known as Megahertz).
Area Notes: Unknown

Details

Markings: "STODDART AIRCRAFT RADIO CO., INC./ 10645 DIPOLE MEASURING TAPE/ FOR USE WITH NM-30A/ HOLLYWOOD, CALIFORNIA" printed on plate mounted on casing front. "MADE IN U.S.A./ REG. U.S. PAT. OFF. TRADE MARK/ PAT. PEND."stamped into second plate, overlapping the first. "K - E" stamped into reel handle. "[A]TTACH RING TO HOOK IN/ [CEN]TER OF DIPOLE ANTENNA", "K-E", "MEGACYCLES" and scales printed on tape face.
Missing: Small piece of printed tape face missing at fracture.
Finish: Finely pebbled red imitation leather covering on most exterior surfaces; silver metal reel and spindle mechanism for "tape", tape end with ring, and casing trim. Goldtone and black metal plate on casing bears mfr's info.; black finish of grip for reel is badly damaged. Off-white metal tape has black print & graphics.
Decoration: N/A

CITE THIS OBJECT

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

Keuffel & Esser, Measure, frequency, between 1954–1966, Artifact no. 2006.0048, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2006.0048.001/

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