Based on the study of the two-bar profilometer, a new scheme of the profilometer using the planar five-bar parallel connected mechanism is proposed and its mathematic model is established.

• 以二连杆机构外形测量仪研究为基础，笔者进一步提出了基于平面五连杆并联机构的测量仪新方案，并建立了测量模型；