This 2 Piece Kit Includes 6" & 4" Machinist Square 90 Degree Hand Tool New Machinist Square This is a new machinist square milled to perfection This square is at an exact 90° angle Perfect for sharp corners, centering stones and a wide variety of other uses It measures approximately 6" (152.5 mm) New Machinist Square. This is a new machinist square milled to perfection. This square is at an exact 90 angle. Perfect for sharp corners, centering stones and a wide variety of other uses. It measures approximately 4" (102 mm). Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design. Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.