A trig point looks like a dead, solid lump of concrete or stone, and yet the maths, physics and geometry going on inside it is slightly mind-boggling. Or it’s their place in history.

Good visibility. From the top of Céidín we could see Mount Leinster, Mullaghcleevaun and several other trig stations. Of course, measuring angles by eye from a trig pillar was dependent upon ...

A Harrogate walker has conquered over 400 of Yorkshire's '˜trig pillars' as mapmakers mark the 80th anniversary of the iconic beacons. All Sections. News you can trust since 1754.

In 1936, the Ordnance Survey began to construct concrete triangulation pillars, or trig points, to aid accurate measurement and map-making using the principles of trigonometry. By 1962, more than ...

Trig pillars were first used in the retriangulation of Great Britain on April 18, 1936. Up until this point, map-making had been based on a collection of observations between 1783 and 1853.

A handful of fans visited Northamptonshire to mark the 75th anniversary of the Ordnance Survey's first trig pillar, the triangular post used by surveyors, near Cold Ashby.

A woman has hiked up 88 Peak District hills in memory of her mother, who designed one of the trig pillars marking the highest points. Lucy Coppack, from Macclesfield in Cheshire, ...

A woman has hiked up 88 Peak District hills in memory of her mother, who designed one of the trig pillars marking the highest points. Lucy Coppack, from Macclesfield in Cheshire, undertook the ...