I am currently working with a system and have created 2x Layouts.
In Layout #1 the Viewport scale is set and locked to 1:100.
In Layout #2 the Viewport scale is set and locked to 1:50.
How can I control the label text to display at the correct height (2.5mm) in both differently scaled layouts?
The AutoCAD Text Style is STANDARD (isocp.shx, Height = 250mm)
CADmep Main Database > Takeoff > CAD Settings > Annotation > Number Text, Size Text, Level Text, Offset Text & Alias Text > Text Style = STANDARD
The current result is that on Layout #1 the text is 2.5mm high and on Layout #2 the text is 5mm high)
I would normally control text heights using an Annotative Text style but this does not work in CADmep (in my experience)
Neil 
I found my answer in the XtraCAD forum,
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The way I handle this is to only show mt text in paperspace. The text is still in model spec but only shows in paper space. see attached file with settings. I set my text up in the text styles to my desired print height ( 1/8", 3/32"). By going this route, it keeps my model space clean and I control all my text (size, alias, elevation) through my viewport when in paper space. Using this method, regardless of my viewport scale, my text will always be the size I set it in my text styles.
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http://www.xtracad.com/forum/index.php?topic=10048.new#new
Neil