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Plynlimmon

Plynlimmon

Surveyor: Giles, John C

Medium: Pen and ink on paper

Date: 1833

Shelfmark: OSD 336

Item number: 14

Length: 36

Width: 31

Genre: Map

Map scale ratio: 2'' : 1 Mile ( 1: 31680)

This drawing covers the boundary between the counties of Cardiganshire and Montgomeryshire. The border is marked as a red pecked line, following the course of the River Dovey for much of its length. Archaeological sites are noted in gothic script, an obligatory feature after 1816. A dot within a red triangle represents a trigonometric station, from which the surveyor took angular measurements in order to plot the location of topographical features.

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