In Siemens NX sketch application, You can resize the text height. The figure below shows the settings to resize text height in NX Modeling.

To resize text height:
- Open the “Customer Defaults”
File => Utilities => “Customer Defaults” - Go to the “Sketch => General => Sketch Settings.
- Type a new “Text Height ” value as shown in the figure
- Click on “OK” to close the dialog box.
- Restart the Siemens NX. (Settings will be changed after the NX restarted)