Accuracy	Accuracy of APAS
BioMch-L	Accuracy of the Ariel Performance Analysis System
Comparison	A Comparison of Commercially Available Systems
Device 1	Description of testing device
Device 2	Richard's device in action
Ranking	Ranking
Results	Results
Study	Accuracy of three-dimensional linear and angular estimates obtained with the Ariel Performance Analysis System
Summary	Summary
Test 50 cm	Measure a known distance between 2 markers
Test 95.8 Degrees	Measuring a known angle between 3 markers
Test Stationary	Stationary test