SquareS & Angle Plates

Master squares are ideal for inspecting the X, Y and Z axes of machine tools. This product is very stable and rigid, providing the ultimate in squareness references. Our master squares have five finished faces (one large face and four edges) finished flat, square and parallel to either laboratory grade AA (.000025” per 6”) or inspection grade A (.000050” per 6”). All six faces can be finished upon request.

Ideal for checking X, Y and Z axes of machine bases or parts, our triangular-shaped master angle plates are very rigid and stable and are available with either two or three finished faces. The two-face master angle has two perpendicular edges finished flat and square. The three-face has a large triangular face finished flat and square to those two edges. Our master angles come in laboratory grade AA (.000025” per 6”) or inspection grade A (.000050” per 6”).

Angle plates provide a convenient and practical means of clamping and holding work in a vertical position. Their outstanding finish and flatness make them very compatible for use with granite surface plate accuracies. Our angle plates are available with either two or four finished faces. The two-face angle plate has the bottom and the adjacent square face finished flat and square to one another. The four-face is similar to the two-face, but has the two adjacent sides finished flat and square to the other two faces, as well as being parallel to each other. The laboratory grade AA has a tolerance of .000025” per 6” and the inspection grade A has a tolerance of .000050” per 6”.

Inserted angle plates are available upon request. This product is the same as our standard angle plate with the addition of metal discs inserted into one side. The inserted angle plates also have a main gauging face for magnetic chucking purposes and threaded inserts for clamping purposes.