Re: Rob Tucher
"Then with a lupe I focus on close and then far light pinpoints, getting a feel for where each point is on the rack-and-pinion, and then settle at the one-third/two-thirds point."
The Rodenstock calculator suggests that you pick the point along the focus track which is exactly half way between the near and far focus points. I've always assumed that this point actually represents the 1/3 in front - 2/3 behind point. When I feel the need to be extremely accurate, I use a slide caliper to measure the relative displacement of the rear standard along the track. Is this half-way point method indeed correct?
The flashlight trick sounds very promising.
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