2min chapter

99% Invisible cover image

Map Quests: Political, Physical and Digital

99% Invisible

CHAPTER

What Are Triangulation Stations?

In Britain, everyone just calls them trig points or trig pillars. They are the remnants of a centuries long effort to do something that we today kind of take for granted: make a topographical survey of an entire country. The first graphically accurate maps were only of certain small areas and they weren't even like that accurate because anytime they tried to line them up side by side, they never in agreement.

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