Datum Identifier dialog box

The Datum Identifier dialog box allows you to set all parameters for the datum identifier symbol.

The parameters entered for the datum identifier symbol will be stored temporarily and used as default values for the next datum identifier setting.

The most recent revision of the standard to which this symbol conforms is displayed at the top of the dialog box.

The dialog box contains 2 main tabs, Symbol and Leader and text.

Symbol

Identifier (2): Defines the identifier, which can contain a maximum of two characters that is automatically assigned in alphabetical order, starting with A, followed by B, C, and so on. After reaching Z, the sequence continues with AA, AB, AC, etc. If an identifier is deleted, the AMDATUMID command will attempt to fill the gap starting from the top of the alphabetical list. For example, if identifiers A, B, and C are in use and B is deleted, the next time an identifier is needed, it will reuse B to fill that gap.

Thread note (3): Defines the thread notes, which are placed on symbols attached to gears or screw threads. They specify which diameter to use as the datum.

Datum note (4): Defines the reference datum targets which correspond to points on a surface. Generally, it contains a series of datum targets separated by commas (",").

Note: Thread and datum notes are not available for all standards.

Specifies the Leader and text characteristics.

Leader (5)

Sets the leader characteristics.

Surface arrowhead: Sets the arrowhead for surface indication leaders.

Note: This option is only available for the standards which allow surface indicator leaders.

Object attachment

Defines if the symbol leader is attached or detached to the object.

Surface extension line (6)

Sets the surface extension line characteristics.