Review on Cabinet Hardware Jig Punch Locator - Drill Guide Adjustable Inch & Metric Scales, Aluminum Alloy With Φ5Mm Drilling Hole, Tool Cabinet With Drill Bit And Hand Marking Tool by Jay Buford

I'll admit I'm not using this for its intended purpose. We have a couple VERY large mirrors that need to be hung and I'm not fan of the wire method. I want to hang them on individual screws using the attached mounting hardware on the mirrors. OF COURSE, no matter what you pay for a mirror and no matter what size it is, the mounting brackets in the back are NEVER level. One is always higher or lower than the other, making mounting this way impossible. I always wind up taking them off and measuring everything properly and reattaching them. It's a royal pain, but I like it so much better. This thing is a godsend for just that purpose. Being able to reliably place the mounting holes for reinstalling the hardware on the back of the mirrors without having to break out 8 different types of measuring tools is SOOOO nice. Big fan of this tool.