Exam 41: Orientation Tolerances

A tolerance of form or orientation may be specified where the tolerances of size and location do not provide sufficient control.

Orientation tolerances, when applied to plane surfaces, control flatness if a flatness tolerance is not specified.

The general geometric characteristic for orientation is perpendicularity.

When specifying perpendicularity, the cylindrical tolerance zone has a diameter equal to _____.

Where a feature (hole) departs from MMC, an increase in the perpendicularity tolerance zone is allowed equal to the amount of departure.

Orientation tolerances control angularity, parallelism, and ______________________________.

The symbol for angularity is ____.

The symbol for perpendicularity is ____.

The condition of a surface square with the datum plane is called ____.

Another name for perpendicularity is ____________________.

Parallelism deals with features that relate to each other by an angle of ____.

Because cylindrical features represent features of size, orientation tolerances are applied on an LMC basis.

The symbol for parallelism is ____.

Tolerance zones for perpendicularity differ significantly for internal and external features.

Angularity is a condition of a surface or axis at a specified angle, other than 0° and ____________________°, from a datum or axis.

In geometric tolerancing, orientation refers to the angular relationship that exists between two or more lines, ____________________, or other features.

An orientation tolerance indicates a relationship between two or more ____________________.

Parallelism is the condition of a surface equidistant from a datum plane.