Setting an MRP™ requires two dimensions: the distance between each shoe (the “A” or “CPU” dimension) and the distance between the shoe and the wear pad (the “B” dimension).
If you use rod standards, then both the “A” and “B” must be specified and set.
However, on a MIC TRAC™, the CPU dimension must be specified and set, while “B” needs only to be set within the Lc distance (minimum perfect threads distance). Prior to placing on the MIC TRAC™, “B” can be set using a scale.