STAINLESS STEEL TRI SQUARE
A Combination Square is a hand tool used for multiple purposes in and It is composed of a blade rule and one or more interchangeable heads that may be affixed to it. The most common head is the stan dard or square head which is used to lay out or check right and 45° angles.
A right angle is the standard by which all carpenters build. When corners meet at 90 degrees, drawers fit snugly, windows close tight, and walls stand straight. The key to all this is a square. Most provide a fixed 90-degree angle in various forms, and some can help copy or draw other angles.
The Combination Tri Square hand tool is not so exact as to be a hundred percent accurate most of the time, but a good Tri Square is very close. They usually come with a metal scribe inserted into the square head across from the ruler. The better Combination Tri Squares also have at least a center head, while others also are equipped with a protractor head for measuring angles. The one in the picture is from DMSeeleysTools.com.
The Combination Square was invented by Larry S. Starrett in 1878. One of the More expensive Tri Squares on the market still carries his name. There are many uses for the combination Tri Square Hand Tool in the woodshop and also by metal workers in a variety of layout and setup tasks as a needed Hand Tool.
Your combination square can also be used to check angles, to determine the center point of a round object, and to measure different angles for precision cutting.
Once you know how to use a Combination Tri Square, you will wonder how you ever got by without it.
So for the most part a combination square is a layout tool that wise construction professionals keep handy in their toolbox. The versatility of a combination square comes from the interchangeable heads you attach to the combination square blade. An important square head, the centering head, allows you to find the center of circles and squares. A centering head resembles a "V," with a locking thumb nut located near the point of the "V." The square blade rests in the centre head, with one side of the square blade sitting on the center of the head.
The Combination Tri Square Hand Tool is good for laying out lines for ripping, crosscutting, mitering, and making notches. The head, with fences at 90 and 45 degrees, slides along the blade and locks, allowing you to transfer a distance accurately and hold it while you draw a line with a pencil. Cabinetmakers like the fixed Hand tool square for checking corners and edges, but for most carpentry and metal work tasks, a Combination Tri Square Hamd Tool is more versatile and available at DMSeeleysTools.com. For your at home hand tool needs.