Text Scale

[CADbadger]

Is it possible to produce text in model space that will remain the same size in paper space when the viewport is set to different scales.

[lpseifert]

Not really but... (from Acad 2006 Help)

Change the Scale of Multiple Text Objects

A drawing may contain hundreds of text objects that need to be scaled, and it would be tedious to scale them individually. Use SCALETEXT (http://www.cadtutor.net/forum/ms-its:ACAD_ACR.chm::/ACR.s.017.SCALETEXT.htm) to change the scale of one or more text objects such as text, multiline text, and attributes. You can specify a relative scale factor or an absolute text height, or you can scale selected text to match the height of existing text. Each text object is scaled using the same scale factor, and it maintains its current location.
Convert Text Height Between Model Space and Paper Space

The SPACETRANS (http://www.cadtutor.net/forum/ms-its:ACAD_ACR.chm::/ACR.s.078.SPACETRANS.htm) command converts distances between model space units and paper space units. By using SPACETRANS transparently, you can provide commands with distance entries relative to another space. For example, you may want to create a text object in model space that matches the height of other text in a layout. From model space, you could enter
Command: text
Specify start point of text or [Justify/Style]: 1,3
Specify height <0.375>: 'spacetrans
>>Specify paper space distance <1.000>: 3/8
Resuming TEXT command
Specify height <0.375>: 1.173
When the command is complete, a text object is created in model space with a height of 1.173, which appears as 3/8 when viewed from a layout.