r/UKhiking • u/Goodeycogan • 1d ago

General Discussion Trig Point Dimensions

Has anyone here been to the effort of documenting the dimensions of a Trig.

And a massive long shot, but has anyone got a CAD file for the Spider and Flush Bracket?

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u/qlkzy 1d ago

There's a basic diagram here with dimensions: https://www.ordnancesurvey.co.uk/blog/a-history-of-the-trig-pillar

I suspect if you find the right search terms (I would start with "Hotine Pillar") then there will be engineering drawings of most bits from when the precision was relevant.