Rockler 3-in-1 Bar Gauge

Sometimes the oldest, most basic tools can turn out to be the most efficient ones. Our 3-in-1 Bar Gauge, a refinement of a time-honored cabinetmaker's tool, is certainly one of them. It doesn't quibble over metric or imperial measurements, or even any measurements at all. It simply tells you if your frame, drawer or case is square, or whether the part will fit. It includes three sets of interchangeable tips that let you check diagonals for square, transfer measurements and even scribe circles.
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