Artifact Details

Title

Log-Log Duplex Trig Slide Rule

Catalog Number

XD50.76

Type

Physical object

Date

1939

Manufacturer

Keuffel & Esser Company

Place Manufactured

U.S.

Identifying Numbers

Model number 4080-5
Other number RE.20.984 patent number
Serial number 445652

Dimensions

1/2 x 23 3/4 x 2 1/8 in.

Category

Pre-computer: slide rule

Subject

Analog; Hand calculation; Oughtred, William

Credit

Gift of Dick Clayton

Lot Number

XD50.76

Related Records

XD50.76B Log-Log Duplex Trig slide rule case