Yes, larger dot pitch means less dots per inch (dpi), and the 19" 1280x1024 monitors had a massive dot pitch. The 27" 1920x1200 screens probably have the absolute largest dot pitch of currently available TFT monitors (purposely ignoring TVs). You do realise you can adjust the font size in Windows DPI scaling options? Why do you want to know?
edit: See here.
I did try resizing the windows text on a 20" widescreen, but some web pages look odd if you do that