Hi,

On the 1200 Durst Enlarger column there is a scale along with the enlarger
height scale (I believe) in inches and in meters. This particular scale has
4 divisions for 50mm., 80mm., 105mm. and 150mm. enlarging lenses and has
sequential numbers not necessarily starting from 1 within brackets. These
numbers do not start and end the same for different focal lengths of lenses
and are not spaced out the same for different enlarging lenses.

I wonder what they are and how one can make a use of them. I suspect they
show enlargement factors??? All comments are welcome. Regards.