General Information

Serial #

76586

Part Number

1

Total Parts

3

AKA

N/A

Patents

N/A

General Description

METAL PLANIMETER(STAINLESS STEEL, STEEL, POSSIBLY BRASS)/ SYNTHETIC COVERED WOOD CASE WITH VELVET LINING & METAL HARDWARE/ CARDBOARD BOX

Dimensions

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

Length

24.0 cm

Width

9.3 cm

Height

5.3 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Mathematics

Category

Drawing & measuring instruments

Sub-Category

N/A

Manufacturer

AKA

Keuffel Esser

Country

United States of America

State/Province

New York

City

New York

Context

Country

Canada

State/Province

Ontario

Period

1945-C.1990

Canada

Unknown

Function

AN INSTRUMENT USED TO MEASURE MECHANICALLY THE AREA OF ANY CLOSED PLANE FIGURE OR IRREGULAR SHAPE ON A DRAWING OR MAP.

Technical

A TYPICAL EXAMPLE OF A DEVICE TO MEASURE AREAS FROM DRAWINGS & MAPS. THE DESIGN EVOLVED FROM PROFESSOR JACOB ANSLER'S 1856 PLANIMETER.

Area Notes

Unknown

Details

Markings

.1 INCISED '76586' WITH WHITE LETTEING ON COUNTING DIAL & MEASURING WHEEL/.2 INCISED WHITE LETTERING READING 'KEUFFEL & ESSER CO. N.Y. MADE IN U.S.A.'/.3 INCISED '10' & SYMBOL/ EXTERIOR OF CASE STAMPED IN GOLD 'KEUFFEL & ESSER CO. N.Y./ 4236'/ INTERIOR LABEL ON CASE READS 'KEUFFEL & ESSER CO./ PLANIMETER NO. 4236/ SERIAL NO. 76586' WITH SCALE INFO./ RED & WHITE LABEL ON BOX EXTERIOR READING 'COMPENSATING/ POLAR PLANIMETER/ K&E CO./ 1 ONLY 4236 FIXED TRACER ARM/ MADE IN U.S.A. REG. U.S. PAT. OFF.'/ INTERIOR OF BOX STAMPED 'KEITH A. MACKINNON/ CONSULTING RADIO ENGINEER/ OTTAWA CANADA'

Missing

N/A

Finish

BLACK PAINTED, PLATED & METALLIC PLANIMETER/ BLACK COVERED CASE WITH GREEN LINING/ GREEN BOX

Decoration

N/A