MICROFLAT GRANITE SURFACE PLATES

Granite Surface Plates are used for precision gauging, inspection, layout and marking purposes. They are preferred by Precision Tool Rooms, Engineering Industries and Research Laboratories because of their following outstanding advantages:
No rust, no corrosion, relatively warp-free, no compensation hump when nicked, longer wear, smoother action, greater precision, nonmagnetic, less care after commissioning, lower co-efficient of thermal expansion and non-glaring surface.

   STANDARD SIZE AND TOLERANCE OF FLATNESS   


SIZE IN MM
FLATNESS TOLERANCES OF VARIOUS GRADES (MICRONS)
(L x B) GRADE - 0 GRADE - 1 GRADE - 2 GRADE - 3
160 x 100 3.0 6.0 12.0 25.0
250 x 160 3.5 7.0 14.0 27.0
250 x 250 3.5 7.0 15.0 30.0
400 x 160 4.0 8.0 16.0 32.0
400 x 400 4.5 9.0 17.0 34.0
630 x 400 5.0 10.0 20.0 39.0
630 x 630 5.0 10.0 21.0 42.0
1000 x 630 6.0 12.0 24.0 49.0
1000 x 1000 7.0 14.0 28.0 56.0
1600 x 1000 8.0 16.0 33.0 66.0
2000 x 1000 10.0 19.0 38.0 76.0
2500 x 1600 11.5 23.0 46.0 92.0
*Other sizes on request.

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