Leather Working L-Square

Squares, also known as l-squares, are generally an l-shaped ruler. They have a longer ruler-like side, and connected at a 90-degree right angle is another, shorter straight side. This allows for measuring and marking corners and perpendicular lines, knowing the angle is precise. L-squares are usually available in metal, plastic, or wood materials. They are marked in inches (imperial), millimeters (metric), or any variation of scale and units.