Bicycle Tag of bike

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Thrustvector in reply to @dicki

Ok, so what is this? (Answers like 'an obelisk' will be met with frozen sausages.)

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hamrack in reply to @Thrustvector

A trig point is one of these
https://en.wikipedia.org/wiki/Triangulation_station
It's 'like an obelisk' only it's shorter and less pointy on top.

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