That’s how I’ve done it, albeit I just use the upper jaws on the caliper rather than my bore gauge for the main journal measurement…just quicker. The fun part is trying to get the lower jaws on the caliper to sit flat on the deck (others who do this more often are probably more efficient). Careful when dropping the jaws down the bore, the jaws (at least on mine) are pretty long and those upper jaws look like they want to leave their mark in that nice new cross hatch.