SKEDSOFT

APPLICATION OF TOLERANCES TO DIMENSIONS

Tolerances should be specified in the case where a dimension is critical to the proper functioning or interchangeability of a component.

A tolerance can also be supplied to a dimension which can have an unusually large variation in size.

General tolerances.

These are generally quoted in note form and apply when the same tolerance I applicable all over the drawing or where different tolerances apply to various ranges of sizes or for a particular type of member. The following examples illustrate the use of general tolerance.

Individual tolerance.

For tolerancing individual linear dimensions one of the following method may be used.

Limit dimensioning.

By specifying both limits or size and placing them above and below the dimension line. This is the most foolproof method for general use.