What is an A-frame? The A-frame is an accurate and simple tool for measuring and marking level contours on a hillside field to be stabilized by terracing.

What will I need to make the A-frame? You will need three straight branches, two (of equal length) about 2 meters long and the third about 1 meter long; string to affix the branches together and a length to suspend the plum bob; and a plum bob, possibly a pointed rock or bottle weighted with small stones. You will also need numerous stakes to mark your contours across a hillside. Read more »