Abstract: marble, granite square is used for inspection, measuring, lineation, equipment installation, construction of industrial engineering is a professional measuring tool, referred to as square, also known as guiding rule in some situations, used to detect work-piece verticality and the relative position of verticality, sometimes used for marking.

One large face and two edges finished flat and square to each other. Custom sizes and thicknesses, plus threaded inserts and lightening holes are available.

Granite Square (Triangular)

Granite square are made of selected black granite. These triangular shaped granite squares are ideal for checking X, Y and Z axes of machine bases or parts. They are very rigid and stable. The two face master angle has two narrow perpendicular edges finished flat and square.

Specifications

Size 
(mm)    Accuracy 
(um)
300 x 200 x 63    5
400 x 250 x 63    6
500 x 300 x 80    6
600 x 400 x 100    8
1000 x 600 x 100    10

*Other Sizes On Request