| US 7,543,393 B2 | ||
| Method of calibrating a scanning system | ||
| David R. McMurtry, Dursley (United Kingdom); Geoffrey McFarland, Dursley (United Kingdom); Kevyn B. Jonas, Bristol (United Kingdom); and Leo C. Somerville, St. Charles, Ill. (US) | ||
| Assigned to Renishaw PLC, Wotton-under-Edge (United Kingdom) | ||
| Filed on Nov. 27, 2007, as Appl. No. 11/987,103. | ||
| Application 11/987103 is a continuation in part of application No. 10/581604, granted, now 7,318,284, previously published as PCT/GB2004/005276, filed on Dec. 16, 2004. | ||
| Claims priority of application No. 0329098.8 (GB), filed on Dec. 16, 2003. | ||
| Prior Publication US 2008/0083127 A1, Apr. 10, 2008 | ||
| Int. Cl. G01B 5/004 (2006.01) | ||
| U.S. Cl. 33—502 [33/503; 73/1.79] | 17 Claims |
| 1. A method of measuring an object using a surface sensing device mounted on a coordinate positioning apparatus, the method
comprising:
(a) measuring a single surface point of a feature of the object with the surface sensing device;
(b) moving the surface sensing device along a path around the feature at a fast speed, thereby taking measurements along the
path, including at the surface point;
(c) determining the difference between the measurement of the surface point in step a) and in step b); and
(d) using the difference determined in step c) to apply a correction to the object or subsequent objects having the same feature.
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