is the condition of a surface, axis, or centerplane, which is at a specified angle from a datum plane or axis.

indicating that a dimension is an arc length measured on a curved outline. The symbol is placed above the dimension.

used to describe the exact size, profile, orientation or location of a feature. A basic dimension is always associated with a feature control frame or datum target. (Theoretically exact dimension in ISO)

to indicate that a profile tolerance applies to several contiguous features, letters may designate where the profile tolerance begins and ends. These letters are referenced using the between symbol (since 1994) or the word between on drawings made to earlier versions of the Standard.

describes a condition in which two or more features , in any combination, have a common axis.

is used to indicate a countersink. The symbol precedes the dimensions of the countersink with no space.

describes a condition of a surface of revolution in which all points of a surface are equidistant from a common axis.

is the actual component feature used to establish a datum.

indicates a circular feature when used on the field of a drawing or indicates that the tolerance is diametrical when used in a feature control frame.

is the condition of a surface having all elements in one plane.