A low-cost LED micrometer for their Model 1200 Crankshaft Gage that validates parts that have been rolled to the proper depth and stress-relieved is now available from ADCOLE Corporation of Marlborough, Massachusetts. The sensor provides ±3 µm accuracy, ±1 µm repeatability, and 0.25 µm resolution to validate that parts have been rolled to the proper depth. Capable of measuring fillet undercut depth [before and after rolling] at a 35 degree roll angle, journal straightness, and radial distance or journal shoulder to journal, this gage creates chart reports depicting any problem areas. Providing 3x higher accuracy and resolution than a laser micrometer, the ADCOLE LED Micrometer Sensor is attached to the follower carriage and the Z-axis location is known by the standard gage for start/stop measurement. Supplied standard on the Model 1200 Crankshaft gage, it is also offered for retrofit. The Model 1200 features a menu-driven sequence builder utility for developing measurements sequences for new crankshafts and camshafts.