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Description: | An almost complete pair of copper alloy mathematical or surveyor's dividers dating to the post-medieval period. The dividers have a globular knopped handle, broadly octagonal in cross section, to the upper aspect which forms a hinge between the two arms. A narrow circumferential collar is present at the base of the handle where it narrows to the arms. The main arm continues with an octagonal cross-section before narrowing to accommodate the second arm. At this point both arms acquire a trapezoidal cross-section which in turn becomes semi-circular as the arms curve to form a hump which, when the arms are closed, results in a circular void. A transverse decorative ridge is present where the humps close below which the arms continue with a semi-circular though tapering cross section. Both arms terminate in worn breaks though the second arm is slightly longer and is stained by iron residue at the base which represents the remains of a fine iron nib.The metal has a mid patchy green patina and is worn. The dividers are 89.6mm long, 19.8mm wide, 6.8mm thick and weigh 29.3g.Numerous similar dividers in various stages of completeness have been recorded on the PAS database from around the country illustrating their ubiquity. For examples see: KENT-84543C, DENO-CB5F78, HAMP-04D123, NMS-618EA7, SUSS-DF4C47, SUR-010582, LANCUM-27C334.Dividers are an early type of mathematical instrument which can be used for numerous functions including geometrical operations such as scribing circles and also for taking off and transferring dimensions. Their versatility has allowed them to be a useful tool of mathematicians, designers and a variety of craftsmen which have been produced in different sizes and materials. Such implements are most common from the 16th century onward.
Original Image | Publisher: | http://finds.org.uk | Source: | Portable Antiquities | Identifier: | https://finds.org.uk/database/artefacts/ | Go to resource |
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