[panamajack]

Most monitors have stands that limit their use to rotating and tilting. A few also permit you to pivot, that is, change the default view from a horizontal, landscape view (i.e., 1920 x 1200), to a vertical, portrait view (i.e., 1200 x 1920). For word processing, portrait monitors have been used for more than twenty years.

I have an HP w2408h that pivots in the manner you suggest. It goes without saying that you will need a graphics adapter that allows you to change the orientation to match the physical position of the monitor.

There are not too many 1920 x 1200 monitors that pivot, in addition to rotating and tilting. The ones I have found are in the $350 to $450 range for a 24" diagonal screen. Two portrait monitors, side-by-side, will give you 2400 x 1920 of screen real estate for under $700.