Tables of fundamental tolerances in sixteen grades and of limits for twenty-one qualities of shafts and holes in inch and metric. Metric tables extracted from ISA system, inch tables are direct conversion with values rounded in accordance with a preferred series of tolerances. Explanation of system, diagrams, disposition of tolerance zones for holes and shafts, selection of fits for general engineering. Formulae from which fits are derived. Imperial units only.Cross References:BS 308BS 969BS 2045BS 2517ISA Bulletin 25The metric requirements have been replaced by BS 4500:Part 1:1969.Incorporates the following:AMD 277 published 15 July 1969PD 1609 published 15 March 1953PD 3353 published 15 March 1959