Model S-670 3-axis system fits 1–5.5 in. shaft dia, stores up to 500 files, and includes 1-axis super-linear PSD technology with 1 micron resolution. With bracket sets for 1–10 in. shaft dia, Model S-680 5-axis system has 1,000+ file capacity and 2-axis PSD technology with 0.5 micron resolution. Both systems have measuring range of 30 x 10 mm. Dual Beam detector technology allows measurement of center and angle simultaneously with only 1 PSD.