General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CARDBOARD/ METAL GROMMETS

Dimensions

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

Length

21.2 cm

Width

12.1 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Mathematics

Category

Calculating devices

Sub-Category

N/A

Manufacturer

AKA

PERRYGRAF

Country

United States of America

State/Province

Illinois

City

Maywood

Context

Country

Canada

State/Province

Ontario

Period

C. 1968 +/ DONOR USED THESE SLIDE RULES BETWEEN 1974 & 1985.

Canada

AMERICAN MADE SLIDE RULES USED BY CANADIANPROFESSIONAL ENGINEER IN HIS WORK IN RADIO COMMUNICATIONS. MR. ROSPLESCH WAS REGISTERED PROFESSIONAL ENGINEER IN ONTARIO & ELECTRICAL ENGINEER FOR GOVT OF CANADA IN WINNIPEG & OTTAWA WHERE HE USED THESE SLIDE RULES BETWEEN 1974-1985.

Function

DEVICE USED TO MANUALLY APPROXIMATE EXPECTED ANTENNA PERFORMANCE & COMPUTE PARAMETERS USED IN ANTENNA MEASUREMENTS, INCLUDING BEAM WIDTH, SIDELOBE MAXIMUN POSITION, GAIN, FREQUENCY VS WAVELENGTH, FREE SPACE ATTENUATION, NOISE TEMPERATURE & NOISE FIGURE, WIND FORCE & WIND PRESSURE & OTHERS. IT WAS USED BY ENGINEER.

Technical

EXAMPLE OF SPECIALIZED SLIDE RULE. DONOR DESCRIBES THESE AS TOOLS OF TRADE FOR ELECTRONICS ENGINEERS DESIGNING RADIO COMMUNICATIONS LINKS IN YEARS BEFORE SOPHISTICATED COMPUTER PROGRAMS BECAME AVAILABLE. THEY COULD EASILY BE TRANSPORTED FOR USE IN FIELD WHEN RADIO COMMUNICATIONS SYSTEMS WERE BEING INSTALLED OR MAINTAINED.

Area Notes

Unknown

Details

Markings

BROWN LETTERING READING "ANTENNA CALCULATOR" ON FRONT & BACK/ BLACK LETTERING ON FRONT READING "SCIENTIFIC-ATLANTA, INC.", "Box 13654, Atlanta, Ga. 30324", "(C) PERRYGRAF Div. Nashua Corp./ Maywood, Ill. Printed in U.S.A."/ BLACK LETTERING, NUMBERS, SCALES ON FRONT, BACK, SLIDE

Missing

COMPLETE

Finish

WHITE & LIGHT BROWN? FRONT & BACK/ WHITE SLIDE WITH BLACK GRIPS

Decoration

S-A LOGO ON FRONT & BACK