The try square and layout square are among the most helpful measuring tools available. In this article, you’re going to learn about both, so that you’ll finally be able to use them effectively in your next woodworking project.
The Try Square
The try square is an L-shaped device that can take 90-degree angle measurements.
It consists of two short beams that are set at 90 degrees (or right angles) to each other. The try square can be all wood, all metal, or a combination of both wood and metal. The thinner beam or blade has gradations like a ruler.
Metal pins join the stock or handle and the ruler part of the try Square together. Mahogany, walnut, or oak are common types of wood used for making the stock. Brass or steel are the common type of materials used for making the blade.
The try square itself must first be accurate before using it for taking measurements.
To test for its accuracy, lay the stock part of the try square flat and flush to a very flat edge. Use new plywood because it still has perfect flat edges. Draw a line along the standing ruler using a knife or pen.
Next, flip the try square over. The stock part should remain flush with the flat edge. Draw another line along the standing ruler. If the two lines are close and parallel with each other, then the try square is square and true. If the lines are off even the slightest bit, the try square is not accurate.
Use a wooden block to check for the accuracy of the inside face of the try square to its outside edge. The wooden block must have perfect corners to ensure accuracy. There should be no spaces or light passing through between the try square and the wooden block.
Use the try square to measure inside and outside corners of wood joinery.
The Layout Square
The layout square is also an indispensable measuring tool for woodworkers. Speed square and rafter square are the other names for the layout square.
Unlike the try square which is L-shaped, the layout square is triangular in shape. Layout squares are available in plastic and aluminum models, which come in 6- and 12-inch sizes.
The main purpose of a Layout square is to make quick and accurate lines. It is a very accurate device for marking angles in roof rafters. And, it can also check for right angles like a try square.
Use the notch in the inner slot of the layout square to draw lines. Place the longer face of the layout square on a flat edge of a surface, then put a pen or pencil over the notch. Drag the pen or pencil by moving the layout square along the flat edge.
Measure the distance between the drawn line and the flat edge to check for the layout square’s accuracy. Use the layout square for line scribing 90-degree cutting lines as well.
A diamond slot inside the layout square also measures 3½ inches. This is the exact width of a 2X4. In addition, you can use the layout square for making square wood cuts. Hold it against the edge of a cutting saw and guide the saw to make 45- and 90-degree cuts.
Lastly, the layout square can act like a protractor. It has 1 to 90 degree markings on its longer face. There is a pivot point marker in one corner. Use this pivot point to move to the corresponding degree. This is very useful in marking angles in rafters.
Please Share This Article 🙂
