How to make compasses

In many places in our life, we need to draw circles, and doing homework by hand is the most commonly used. However, if we don't have compasses at hand, it is difficult to draw a circle. Today, I will share with you some common things at home, and make some simple compasses, which are simple to make. The circle drawn is no worse than a compass. Let's have a look.

Method 1: Prepare three pencils and tie them into a triangle with rubber bands.

As long as you hold down one of the pencils, the other pencil will turn and draw a complete circle. The size of the circle can be determined according to the distance between pencils. You can use a ruler to adjust the corresponding distance between two pencils.

Method 2: Prepare a plastic ruler and drill a small hole under each number. After drilling, it can be used to draw a circle. Put a pencil in the last circle.

If you want to draw a circle a few centimeters, put a pencil under the corresponding number. When drawing, don't move the outermost pencil, and the other pencil can be turned into an animated circle to draw a complete circle. Because it does not destroy the scale of the ruler, it does not affect the use of the ruler.

Method 3: Prepare two straws, cut one of them into small pieces evenly, and then stick it on the other straw with hot melt adhesive. Be sure to get together and arrange neatly.

Put one pen in the farthest straw, put the other pen in the corresponding straw according to the size of the circle you draw, and then turn the pen to draw a regular circle. You can measure the distance between several small straws with a ruler, so that the circle drawn is more standard.

Method 4: Prepare some paper clips. Put your two pens on both sides of the paper clip, one pen is fixed and the other pen becomes an animated circle, thus drawing a small circle. If you want to draw a bigger circle, you can connect several paper clips in series and adjust the distance between the two pens according to the size.

Method 5: Prepare a piece of cardboard, mark the distance per centimeter on it with a ruler, and then drill holes.