A reference point on high ground used in surveying, typically marked by a small pillar.
- Bear left on the top to join the tarmac of the mast access road and the trig point summit pillar is passed on the left.
- A bank and ditch ran north-west towards the main camp on the central knoll near the trig point.
- When I eventually reached the trig point on the 2,759 ft / 841m summit of Vrackie I swore I would never climb the hill again.
Mid 19th century: abbreviation of trigonometrical point.
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