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Artifact Details

Title

Hydralculator

Catalog Number

XB113.80

Type

Physical object

Description

Rule on one side Case and Rule, One Rule on one side, Buy, Portobello Rd

Date

1940

Manufacturer

Lewis & Tylor, Ltd.

Place Manufactured

U.K.

Identifying Numbers

Other number

Patent No. 396,533

Dimensions

1/4 x 7 1/2 x 2 5/8 in.

Category

Pre-computer/slide rule

Collection Title

Gwen Bell artifact and book collection

Series Title

Pre-computing artifacts

Credit

Courtesy Gwen and Gordon Bell

Lot Number

XB113.80