Never heard that expression, Rotacator, before...
Unless you're making precision parts for the aerospace industry, the less expensive models will work just fine. The only part that's critical is the gauge itself. Buy the less expensive model; you can always buy up if you're really unhappy with it. It's not like buying quality with carbide tools or electronics. Just my opinion. I've got a cheap one and it works well...my machinist buddy did a bit of set-up work for me, using it, and he had no complaints.
* The Grizzly one looks identical to mine. Same price range taking the $Cdn. exchange rate into account.
Last edited by DaninVan; 12-15-2017 at 03:50 PM.
Reason: Added text