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. 2017 Jan 31;18:51. doi: 10.1186/s12891-017-1423-6

Fig. 3.

Fig. 3

The goniometer holder device is pictured here, noting its (a) side and (b) top profiles. This device allows the one arm of the goniometer to move with the shoulder plane at the same degree. The goniometer is inserted at a slot that that allows its arm to interact at the center of the top of the subject’s head