Suitable for the squareness checking of precision machines and alignments in precision measurements.

Made out of selected Black Granite having uniform Texture & Colour, very dense & herd wearing, needs no oiling, Velvet lapped finish on working surfaces.

Size in mm Squareness Accuracy (In µm) Straightness Of Working (Surface In µm)
1000 X 750 X 70 7 4
1000 X 1000 X 70 7 4