Happy birthday to the trig pillar, 80 years old today 18 April 2016 gsvalentineblog 1 Comment Ordnance Survey (OS) is celebrating the 80th anniversary of the triangulation pillar. Share this: Click to share on Bluesky (Opens in new window) Bluesky Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on X (Opens in new window) X Like this:Like Loading... Related
Ok I give up , what was it for ?