Total Measuring Range (depends on material and transducer/probe type): 0.025 - 36.000 inches (0.63 - 914.4 mm); Measuring Range on Steel (with standard T-102-3300 probe): 0.025 - 6.00 inches (0.60 - 150.0 mm). The TI-25SX allows the operator to select from 8 preset materials as well as program 2 custom material velocities allowing the user to tune the calibration to be optimized for a specific type of material. The calibration can be locked to prevent any accidental adjustments. The preset materials are as follows: