Focus cam will fit on 4×5 Linhof Technika III. The leading edge will need to be filed down to calibrate a specific 90mm lens. Follow this tutorial to calibrate the cam. This version is intended to be used with the focus bed dropped at 15 degrees as Linhof intended it to be used with wide lenses. The cam is functionally identical to original Linhof cams. If you prefer to use the camera with the bed at 90 degrees, select my version of this cam for level bed. This cam is available marked for 90mm, 95mm to match the markings on your lens.
Available in Aluminum or Bronze. Either will work fine. Bronze is stronger, but costs more.
On demand printing and delivery of this item is provided by Shapeways.
Calibrating Technika Cams, part 1
Calibrating Technika Cams, part 2