Has any one done a study of the Penny and Giles goniometers and compared
them with "truth" what ever that is? How about just comparing them with an
optical system?

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| Gerry Gottlieb (617) 353-8984 |
| NeuroMuscular Research Center 353-9757 |
| Boston University fax 353-5737 |
| 44 Cummington St. |
| Boston MA 02215 /\ |
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