IS 2220 : 1990 Engineering metrology - Steel straightedges - Specification

1 Scope

1.1 This standard covers the dimensions and requirements forsteel straightedges, and provides four grades of accuracy, namelyGrade 00, 0,1 and 2.

2 References

IS 7018 : Part 1 :1983 Technical supply conditions for gauges:Part 1 General

IS 8000 : Part 1 :1985 Geometrical tolerancing on technicaldrawings:Part 1 Tolerancing of form, orientation,location and run-out, and appropriategeometrical definitions

IS 8378 :1987Vocabulary for basic and general terms indimensional metrology.

IS 12937 :1990Engineering metrology - Methods of testingstraightness, flatness and perpendicularity.