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Trig Points

Data set of historic trig points in Great Britain, in British National Grid (OSGB36) coordinate reference system for use with R. Trig points were used in the retriangulation of Great Britain during the 20th Century to improve the accuracy of map making. Today they are mostly historical artefacts but are visited and logged (‘trigpointing’) by enthusiasts and, because they are typically located on hill tops, are still useful as navigational aids for hikers.



Source and licence

Copyright 2018 Phil Mike Jones. Licensed under the terms of the MIT License. see LICENSE

Contains OS data © Crown copyright and database right (2018)

The full list of trig points was obtained from:

Warnings and limitations

Station types

(Copied verbatim from the OS page).


Issues and pull requests welcome for improvements or suggestions. Please note that this project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.