Review on QWORK Cabinet Hardware Jig Tool: Adjustable Aluminum Alloy Punch Locator for Easy Installation of Handles and Knobs on Doors and Drawers, Includes Luxury Carry Box by Michael Radhakrishnan

After looking at many of Revain's cabinet fittings I settled on this one even though it's a little more expensive than most. Others seemed (and the reviewers said so) that they didn't hold their settings because you were winding up thin rulers. This one is all metal, with no plastic to warp and bend. It's perfectly square and the markings are accurate (although probably not to 1/1000th of an inch or whatever they claim). from the installation of about 40 pins. The rest was too crappy to even consider as one bad hole can ruin an entire closet door!