Fowler 52-562-004-0 1-1/2 inch Vertical X-Test Indicator

The Fowler 54-565-233 High-Accuracy Ultima Bore Gauging System has a measurement range of 7.878 to 8.27' and is accurate to + or - 0.00006'. Resolution is 0.00001' and the measuring depth is 3.15'. The gauge has constant spring pressure for repeatability and Bower's FastFit measuring heads for rapid measurement. It uses a three-point contact system for the detection of lobing or triangular form error, and ceramic contact points provide high durability and stability with regard to thermal expansion.