GMT GRANITE TRI SQUARES
GMT Granite Tri-Squares is used for checking the X-Y-Z axes on CNC machines, milling machines, CMM’s.
Made of Indian Black Granite and provided with through-holes for weight reduction and ease of handling. All 6 sides are lapped to maintain flatness, squareness and parallelism.
GMT Granite Tri-Squares provide an excellent, economical way for accurately checking the X-Y-Z axes on CNC machines, milling machines, coordinate measuring machines.
Placed in the horizontal position, (on surface 3 or 4) the X and Y axes can be checked for 90° squareness. With the square in the vertical position, tracing along the vertical edge of the square can check the perpendicularity of the Z axis. Tri-Squares have 6 finished faces.