Miter box

A miter box is like a special box that helps you cut things in a straight line and at the correct angle. It has a little slot where you put the thing you want to cut, like a piece of wood. Then you use a saw to cut it, but the saw fits into little slots in the miter box so that you can only cut in a straight line and at an exact angle, like 45 degrees or 90 degrees. It's a really useful tool for making sure your cuts are accurate and look nice!