Can I jump clamps while scanning?

What version of PC-DMIS is this? You can separate the scans, and construct the circle like you wanted to. If you are I think 2023.1 or later, you can select the 4 scans, then there is a button in the construction window that says "select all hits". If you do not have that, you would begin typing "const" then press tab, and a generic construction will appear. At the text line
"CONSTR/>FEATURE TYPE<, BF, 2D, ,". On the blue text of the Feature Type, hover over it with mouse cursor, and then click it when a box appears around it and select circle.

Construction will look like below. Make sure you are in the appropriate workplane.

CIR1      =FEAT/CIRCLE,CARTESIAN,OUT,LEAST_SQR,NO
            THEO/<0,0,0>,<0,0,1>,1
            ACTL/<0,0,0>,<0,0,1>,1
            CONSTR/CIRCLE,BF,2D, SCN1.HIT[1..SCN1.NUMHITS], SCN2.HIT[1..SCN2.NUMHITS], SCN3.HIT[1..SCN3.NUMHITS], SCN4.HIT[1..SCN4.NUMHITS],,
            OUTLIER_REMOVAL/OFF,3
            FILTER/OFF,UPR=0

Yes, I am using 2024.2. I will.give this a try and hope for the best. Thank you for the reply. Is this the best method to use if I am trying to get the OD measurements?

Yes, I am using 2024.2. I will.give this a try and hope for the best. Thank you for the reply. Is this the best method to use if I am trying to get the OD measurements?

You can always just move the clamps, and the posts to the inside of the part, and use an auto circle instead. Then you'd pull the part towards you instead of pushing away into the posts. If you need both the ID and OD, then you don't need to change what you are doing. A scan might be overkill, unless you truly need to.