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

17.9 cm

Width

9.0 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. 1973 +/ 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 MANUALLY PERFORM CALCULATIONS RELATING TO NOISE GENERATORS, USED BY ENGINEER.

Technical

EXAMPLE OF SPECIALIZED SLIDE RULE. DONOR DESCRIBES THESE AS TOOLS OF TRADE FOR ELECTRONICS ENGINEERS DESIGNING RADIOCOMMUNICATIONS 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

RED STAMP READING "REGISTERED PROFESSIONAL ENGINEER/ M.F.G. Rosplesch/ PROVINCE OF ONTARIO" ON FRONT/ GOLD & BLACK LETTERING ON FRONT & BACK READS "AILTECH A CUTLER-HAMMER COMPANY FARMINGDALE, NEW YORK 11375" WITH BLACK "Copyright 1973, Cutler-Hammer, Inc. Slide Chart by Perrygraf Div. Nashua Corp., L.A., Cal 90064"/ BLACK LETTERING, NUMBERS & SCALES ON FRONT, BACK & SLIDE

Missing

COMPLETE

Finish

WHITE FRONT & BACK/ WHITE SLIDE WITH BLACK GRIPS

Decoration

BLACK, WHITE, GREY & GOLD AILTECH/CUTLER-HAMMER LOGO ON FRONT