Made of granite, free from deterioration or dimensional change over time,
minimal changes in dimension due to temperature changes. Meet GGG-P-463C.
Optional accessory: stand for granite surface plate (part no. 6902),
jack for granite surface plate (part no. 6903).

3M 77793, Textured Surface Applicator TSA-3, For Tight Spaces, 1 Each, 7000005253 