If you are looking for high-quality gauge blocks, the Mitutoyo 611195-531 Rectangular Gauge Block is a perfect choice. It has a 0.50 in nominal size and ASME 0 grade tolerance. The steel gauge block comes with an inspection certificate from MITUTOYO. This rectangular block measures 1 3/8 in x 23/64 in and has a face width of 23/64 in. You will love this MITUTOYO Rectangular Gauge Block because it is the ideal tool for your next project.. This item has been restricted from sale in the following state (s): []