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

21.5 cm

Width

7.6 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

California

City

Los Angeles

Context

Country

Canada

State/Province

Ontario

Period

C. 1976 +/ DONOR USED THESE SLIDE RULES BETWEEN 1974 & 1985.

Canada

AMERICAN MADE SLIDE RULES USED BY CANADIAN PROFESSIONAL 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 COMPUTE MANUALLY MEASUREMENTS ASSOCIATED WITH REFLECTOMETER, USED BY ENGINEER.

Technical

EXAMPLE OF SPECIALIZED SLIDE RULE. DONOR DESCRIBES THESE AS TOOLS OF TRADE FORELECTRONICS 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

HANDWRITTEN "M. ROSPLESCH" ON FRONT/ RED STAMP READING "REGISTERED PROFESSIONAL ENGINEER/ M.F.G. Rosplesch/ PROVINCE OF ONTARIO" ON FRONT/ BLACK & TURQUOISE LETTERING READING ON FRONT "REFLECTOMETER calculator" ON FRONT & "MISMATCH ERROR LIMITS calculator" ON BACK/ BLACK LETTERING ON BACK READS "5952-0948" & "(C) 1976, PERRTGRAF Div., NAshua Corp., L.A., Cal 90064 Printed in U.S.A"/ BLACK & TURQUOISE LETTERING ON BACK READING "HEWLETT-PACKARD/ 1501 Page Mill Road, Palo Alto, CA 94304, U.S.A." WITH OTHER ADDRESSES/ BLACK LETTERING, NUMBERS, SCALES ON FRONT, BACK, & SLIDE

Missing

COMPLETE

Finish

WHITE WITH BLACK GRIPS ON SLIDE

Decoration

"HP" LOGO ON FRONT & BACK