The USDV Technology Corp. TIMI image measuring machine uses a telecentric optical system. USDV provides a series of professional inspection products for measuring the dimensions of various shafts. They all have micron-level measurement precision and can automatically measure all shaft dimensions, including outer diameter, segment height, arc radius, chamfer, angle, thread sizes, and Geometric Dimensioning & Tolerancing (GD&T) such as roundness, cylindricity, concentricity, coaxiality, run-out, and radial profile. Using mechanical threads as an example, TIMI can measure the outer diameter, bottom diameter, effective diameter, pitch, thread angle, and helix angle all in one second.