On most flattop bifocal jobs I use 10mm as reading level on the slab off prism calculator with excellent results.
How is the reading level calculated for progressive?
On this progressive lens the MRP is 4mm below the fitting cross and there are 16 mm from fitting cross to the center of the reading part of the progressive lens. This is a Freeform progressive.
Which should be the Reading level on this job? 16mm or (16-4)=12mm.