General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

PAPER

Dimensions

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

Length

25.5 cm

Width

14.0 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Service-test equipment

Sub-Category

N/A

Manufacturer

AKA

Perrygraf

Country

United States of America

State/Province

Illinois

City

Maywood

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF CALCULATOR USED C. MID 1940S +

Canada

Unknown

Function

USED TO FIND INDUCTANCE, IE. DETERMINE RESONANCE FACTORS & COIL WINDING DATA.

Technical

ARRANGED TO RESEMBLE SLIDE RULE, THIS SIMPLE CALCULATOR USED TO FIND INDUCTANCE WHEN FREQUENCY OR WAVE LENGTH & CAPACITANCE ARE KNOWN, OR WHEN COIL LENGTH & DIAMETER AND WIRE SIZE OR TURNS PER INCH ARE KNOWN.

Area Notes

Unknown

Details

Markings

" ALLIED/ RADIO/ CORPORATION/ CHICAGO 7, ILLINOIS ", " R-F RESONANCE AND/ COIL WINDING/ALLIED RAPID/ Calculator" & "Consult Your ALLIED Catalogue for Everything in/ Radio and Electronics " printed on one side of calculator. Instructions for use, and frequency, wavelength, inductance and capacitance scales also printed on calculator, as well as inch rule. " ALLIED/ RADIO/ COIL WINDING/ Calculator " printed on reverse. Coil and wire size scales also printed on this side. " Mfd, Perry Graf Corp., Maywood, Ill. " & " Copyright 1943, by Allied Radio Corp., Chicago, Illinois " printed along lower edge. " See copy of PT envelope in Supp. Info.

Missing

NONE.

Finish

ORANGE, YELLOW & BLUE TEXT & GRAPHICS.

Decoration

N/A