Protracting parallel rule and components

Made:: 1800-1860 in London

maker:: W and S Jones

Protracting parallel rule by W. & S. Jones, with two arms divided; engraved "W. & S. Jones no. 30 Holborn, London"

Details

Category:: Mathematics

Object Number:: 1910-187

type:: drawing instruments, combined scale protractors and parallel rules

credit:: J.C. Stevens Auction House

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Parts

Protracting parallel rule by W. & S. Jones

Object Number:: 1910-187/1

type:: drawing instrument

Part of protracting parallel rule by W. & S. Jones

Object Number:: 1910-187/2

type:: drawing instrument

Protracting parallel rule; component

Object Number:: 1910-187/3

type:: drawing instrument

Protracting parallel rule; component

Object Number:: 1910-187/4

type:: drawing instrument

Protracting parallel rule and components

Details

Parts

Protracting parallel rule by W. & S. Jones

Part of protracting parallel rule by W. & S. Jones

Protracting parallel rule; component

Protracting parallel rule; component

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