Spiral slide rule, Stanley Great Turnstile, with mahogany box and handle

Description

Accession[2013.0112] Business machines, office equipment and ephemera of the National Mutual Life Association of AustralasiaIdentifierUMA-ITE-2013011200033Scope and ContentThis spiral rule is made of mahogany and brass. It comprises an outer wooden cylinder that rotates and slides up and down. It is marked with spiral logarithmic scales, useful in the field of actuarial science. Its concept is based on the mathematical principle of logarithms, which was developed in 1614 by John Napier.
Inscription: Trademark Stanley / Everything / for the architect / & surveyor / in / field and drawing office / W.F. Stanley & Co. Ltd / 286 High Holborn, London, WC1'
Place of manufacture: London, EnglandAccess StatusOpen for public accessRequest TypeRequest item

Provenance

CreatorNational Mutual Life Association of AustralasiaRoleProvenance

Dates

Date1918

Description Control

Previous System ID2013.0112.00033

Characteristics

Genre/FormCalculatorsDimensions10.5cm(H)x46cm(W)x10.5cm(D)

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Spiral slide rule, Stanley Great Turnstile, with mahogany box and handle