Master Square Granite

Granite master square gmt granite master square made of fine grained black metrology grade granite the gmt 6 face granite master squares are used to check squareness or parallelism of any artefact or structure.
Master square granite. Granite master squares are made with one large face and four edges flat square and parallel to each other with lightening holes. Special thickness threaded inserts with or without lightening holes. Made of black granite they are stronger and denser than light colored granite making them more stable and durable. Master squareblock with the master block is made from selected black granite stone.
These ground master granite squares are made in the usa. Graniteware square cake pans granite ware set of 2 cake pans made in usa. Our square granite master block is very stable and rigid providing the ultimate in squareness references. Looking for a special granite master square.
Indi square model 8 x travel square squareness tester granite master case nr66. Contact us for a quote. Starrett 81923 master square 14 x 14 x 3 5 face granite grade a nr6. Master squares have six finished faces.
Granite master squares are absolutely necessary for accurately measuring the perpendicularity squareness and straightness of the x y and z axes of machine tools.