These data were taken during the validity and reliability analysis of inertial sensors (S) against goniometry (G) for the assessment of the elbow and wrist range of motion. To study the intra-inter-rater reliability, two physiotherapists (A and B) and a technician were in charge of taking the measurements. 29 subjects were evaluated in two different sessions (1 and 2). In the elbow assessment, the flexo-extension, pronation and supination movements were performed. For the wrist, flexo-extension and radial-ulnar deviation movements were evaluated.