Forgotten measurement methods used by the old masters

Accurate measurements and markings of parts are a must when making any wood product. And further I propose to recall a few measurement methods that may be useful.

Some of these techniques are actively used by many, but something has already been forgotten.

Edge markup

Quite often, you need to make a mark from the edge of a bar or board. If you press the ruler against the bar rather than your finger, the markings will become more accurate.

How to split a part into equal parts

With this technique, it is easy to divide the part in half or into equal parts, while you do not need to calculate how much, for example, 65 mm will be divided by 2 or 3.

In this method, the ruler is placed at an angle to get a simple size. For example, in the photo above, a part with a width of 65 mm., Having placed a ruler so that from edge to edge is 80 mm., This part is simply divided into 2 or 4 parts. Marking 4 cm, we get a marking exactly in the middle, marking 2.4 and 6 cm, divide it into 4 parts.

If you turn the ruler up to 9 cm, then it is easy to divide the workpiece into 3 parts.

Marking the center of a quadrangular part

This technique is used quite often to mark the center of the bar. It is enough to draw two lines diagonally to get the center.

You can also find the center of any flat quadrangular parts.

Circle center mark

For such a task, you can quickly make a simple device by connecting the square and the ruler with a clamp, so that the angle between them is 45 degrees.

Next, press the edges of the circle to the square and draw a line along the ruler. Turn the circle and draw a second line. The center is marked out.

Circle diameter measurement

A simple trick to help you easily measure the diameter of a circle.

Bars with right angles are used in the photo. Instead, you can take squares.

How to mark a right angle with a ruler

The technique can sometimes be useful for marking large angles, for example for a foundation, or when only a ruler is at hand.

This is school geometry, the Pythagorean theorem (9,16,25), which is easy to remember. 3,4,5 - if you connect segments of this length, then between 3 and 4 you get a right angle.

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Alexander.

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