Artifact Details

Title

Calculex circular slide rule

Catalog Number

B158.81

Type

Physical object

Date

ca. 1910

Manufacturer

J. Halden and Company

Place Manufactured

U.K.

Dimensions

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

Description

Object consists of a circular slide rule and silver case.

Category

Pre-computer: slide rule

Lot Number

B158.81