How to Square Up Large Cabinets - EZ Pinch Stick

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Woodworking squares and triangles do a nice job of making the smaller projects I build straight and true. But for larger pieces, like cabinets and bookcases, these tools can be misleading. They're simply too small to show whether a project is square -- or not.
Experienced woodworkers know that the best way to avoid a crooked cabinet is to measure the diagonals of the box. If both measurements are exactly the same, the cabinet is square.
The only problem is that measuring a box from corner to corner can be awkward and difficult. You can try using a tape measure, but I've never found this method to be very easy. You can also try making your own measuring tool with scrap pieces of wood from around the shop, but I've never found this method to be reliable.
That's why I created the EZ Pinch Stick. It's a unique measuring tool that lets you check the diagonals of a large box or cabinet with speed and accuracy. The sharp tip extends deep into the cabinet, giving you an extremely precise reading between opposite corners.
If you discover your cabinet is out of square, simply nudge the corners and check the diagonals again. Because the tool is so quick and easy to use, you'll have plenty of time to get your box or cabinet perfectly straight and square before the glue dries.