Not wanting to hijack, so started another thread... Can comments be made on setting them to a specific size? For example, if you need a 16mm reamer but don't have one. If you have the adjustable reamers, what are some good ways to set it? I recently had this exact issue and could neither get a repeatable size using my micrometer over the opposing flutes (due to the small blades, clearance angularity of the blades and my friction thimble). Is it best to use a V-Anvil micrometer? As in, the one that still has a flat faced, movable measuring rod but the anvil rest is a V-shape... or set up some gage block configuration in leu of a ring gage (which I don't have on hand)?