1. An inspection device for inspecting projections on the surface of a part, comprising: a part having projections on the surface thereof; a member having a two-dimensional surface to which said projections of said part are pressed; means for two-dimensionally pressing said projections of said part to said surface of said member at a predetermined pressure; means for detecting a pressure distribution pattern of said projections on said two-dimensional surface of said member; and means for converting said pressure distribution pattern to electronic pattern information.