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| Number | Title | Issue Date |
| 5596403 | System and method for measuring angular position A system for measuring relative angular position about a roll-axis, a yaw-axis, and a pitch-axis includes a source assembly and a receiver assembly. A source assembly emits a rotationally polarized carrier wave laser beam. A laser beam from a laser diode ... | 01/21/1997 |
| 5416590 | Apparatus and process for measuring gap and mismatch A hand-held apparatus and process for measuring the gap and mismatch of two adjacent surfaces. The apparatus includes two strobe lights positioned within a hand-held housing. An optical interface within the housing directs a portion of the light generated... | 05/16/1995 |
| 5196906 | Modular scatterometer with interchangeable scanning heads An optical measurement device produces quality light scatter measurements using Bidirectional Reflective Distribution Function (BRDF) techniques to analyze data generated from an accurate, portable, relatively inexpensive scatterometer. The scatterometer ... | 03/23/1993 |
