Set up my Deardorff V8 showing both extremes in bellow draw.
In full extension, it measures about 31" from the front of the lens board to the back of the ground glass.
My 760mm f11 Apo-Nikkor will focus down to about 30 feet with that amount of bellows, so your 19" lens should be no problem.
Also at the other end, with some contortions, it will focus a 150mm lens at infinity, although have attached an image of a 165mm Angulon at infinity focus.
Hope that is helpful,
Len
Attachment 250024Attachment 250025Attachment 250026
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