BS 4500A:1985, Selected ISO Fits, Hole Basis, 1985.

BS 4500B:1985, Selected ISO Fits, Shaft Basis, 1985.

Giesecke F E, Mitchell A, Spencer H C, Hill I L, Dygdon J T, Novak J E and Lockhart S, Modern Graphics Communications, Prentice Hall, 1998.

ISO 286 1:2002, ISO Systems Limits and Fits Part 1: Basis of Tolerances, Deviations and Fits, 2002.

ISO 286 2:1988, ISO Systems of Limits and Fits Part 2: Tables of Standard Tolerance Grades and Limit Deviations for Holes and Shafts, 1988.

ISO 1101:2002, Geometrical Tolerancing Tolerances of Form, Orientation, Location and Run Out, 2002.

Mitutoyo, The Mitutoyo Engineers Reference Book for Measurement & Quality Control, Mitutoyo (UK) Ltd, 2002.

Zeus Precision Ltd, Data Charts and Reference Tables for Drawing Office, Toolroom and Workshop, Zeus Precision Charts Ltd, 2002.