Datum Target Tool

Use the Datum Target tool in the Detail tab Annotations group to create datum targets in your design, drawing sheet, or 3D markup slide. As shown below, you can insert the following datum target types:

• Point
• Circular Area
• Axis (cylindrical or conical only)
• Line
• Rectangular area

The top field of a datum target is the dimension (target area size or the diameter of the datum target point); the bottom field is the reference letter (target identifying letter), as shown in the image below:

When you create a datum target, by default, the datum callout height ratio is 3.5. This setting controls how many times the current text height the callout circle size should be, for example, the setting of 3.5x is for ASME, and ISO and ISO-based models use a 4x setting.