Made generally as per IS: 5268-1991. Made from good quality closed grained with high Density Alloyed Cast Iron Castings Conforming to Grade FG 220 of IS: 210 Stress Relieved Hand Scraped Surfaces.

Size in mm (L X B X H) Provided Accuracy Flatness & Parallelism In µm Flatness & Parallelism Accuracy As Per IS In µm (Grade 0) Flatness & Parallelism Accuracy As Per IS In µm (Grade 1)
300 X 50 X 75 3 2 3
500 X 50 X 75 4 3 5
750 X 50 X 80 4 3 6
1000 X 50 X 100 7 5 10
1500 X 50 X 100 8 6 12
2000 X 50 X 150 12 10 20
2500 X 50 X 190 14 - -
3000 X 60 X 235 18 15 30
3500 X 60 X 250 20 - -
4000 X 75 X 450 25 20 40
5000 X 75 X 450 35 25 50
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