This study examines the properties of gestures that serve to convey an image of the speaker. The gesture observed can be perceived as a sub-type of gestures that linguistic anthropologist Charles Goodwin termed “environmentally coupled gestures” in that the meaning of the gesture is determined not by its semiotic property but by the mutual elaboration of the gesture and other semiotic resources such as artifacts, utterance, and gaze. A conversation analysis was conducted based on data collected during interaction among members of a project team constructing an installation for a science museum. The results show that team members recurrently re-do gestures that convey the image of the speaker along with another gesture constructed to be coupled with the original gesture.