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[Boxstead]

[Boxstead]

Draughtsman: Verron [Charles]

Medium: Pen and ink on paper

Date: 1799

Shelfmark: OSD 146 (PT2)

Item number: 2

Genre: Map

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

The draughtsman used Balsham Steeple and West Wickham Steeple at the top left of this plan as triangulation points. From these positions, he made angular observations with a theodolite to measure the height of the land and to plot individual topographical features. Pencil rays radiating from these two points record the measurement process.

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