The jointer's angle is a precise measuring and drawing tool in the shape of the letter L with firmly connected arms that form a guaranteed right angle. It is a small angle whose arms typically do not exceed 300 mm in length. Its construction consists of a thicker flange that rests on the reference edge of the material and a thinner arm used for scribing and checking. The key feature is its high precision, which makes it suitable for fine scribing of perpendicular lines, for example with a sharp knife or thin-tipped pencil. It is used for detailed work where maximum precision of joints and dimensions is emphasised.