Earliest records show a spoon shaped compass made of lodestone or magnetite ore ... Often, the Big Dipper (Great Bear) was drawn within the center disc. The square symbolized earth and the circular ...

VO: Mr Measure’s brought along everything he needs. A spade, a tape measure, a metal detector, and his son Ethan with his trusty compass. The map says to start at the old climbing tree and walk ...

A line drawn to cut another line or angle in half ... Without changing the distance between the pencil and compass point, place your compass at the other end of the line and draw another arc ...