Artifact Details

Title

Transmission Line Calculator - Smith Chart

Catalog Number

X29.81A-B

Type

Physical object

Date

(c) 1944; date of mfr unknown

Manufacturer

The Emeloid Company, Inc.

Place Manufactured

U.S.

Dimensions

1/8 x 9 1/4 x 9 1/8 in.

Description

This item comprises two parts: A: Circular slide rule and B: Slipcover circular movable nomograph, specifically a Smith Chart used in calculating transmission line impedances. Paper secured with masking tape to the blue slipcover includes type "Athens Techonological Organization / Athens center of ekistics" and handwritten instructions below for use of slide rule.

Category

Pre-computer: slide rule

Credit

Gift of Cliff Hafen Jr.

Lot Number

X29.81