Revised Standard from Last Update.

1. SCOPE

1.1 This standard specifies requirements for two types of fixed angle set squares, namely, (a) 45 degree - 45 degree, and (b) 60 degree - 30 degree complementary angles, commonly used by cartographers, surveyors and engineers.

1.2 Requirements of adjustable type set squares are not covered under this specification.

2. REFERENCES

The standard given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent edition of this standard:

IS 2500 (Part 1) : 2000/ISO 2859-1 : 1999 Sampling procedures for inspection by attributes: Part 1 sampling schemes indexed by acceptance quality limit (AQL) for lotby- lot inspection (third revision)