The Challenge: Create a Scale Map
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Because some of the island's Northern coastline is inaccessible, we needed another way to
measure the parts we couldn't visit. This is where trigonometry comes in.
First, you mark out a baseline on the ground that is as flat as possible. We needed a method of measuring angles, so we made a giant protractor. The angles were marked on it
using a folded circle of paper and a 10mm (about 0.4 in.) spanner (wrench) as a guide.