SpheroCompact® SuperSpherotronic® HR UltraSpherotronic®
Radius (convex) +2.5 mm to &infin; +2 mm to &infin; <sup>1)</sup> +2 mm to &infin; <sup>1)</sup>
Radius (concave) -4 mm to &infin; -4 mm to &infin; -4 mm to &infin;
Travel of linear encoder ±12.5 mm ±30 mm ±30 mm
Diameter of part under test 6 mm to 500 mm 6 mm to 500 mm 6 mm to 500 mm
Resolution of the linear encoder 0.1 µm 0.1 µm 0.02 µm
Absolute accuracy of the linear encoder ±0.5 µm ±0.5 µm ±0.1 µm
Measurement accuracy <sup>2)</sup> Up to ±0.05 % Up to ±0.01 % Up to ±0.005 %

1) Radius measurement of < +4 mm requires exchange of the ruby gauge head an use of the precision ring 3.5 mm.

2) The maximum measurement accuracy depends on the sample’s radius and the ring used. For detailed information on specific measurement tasks, please contact your sales partner.