Raqs Media Collective's showcase at Senate House during Chennai Photo Biennale 2019. 'An Afternoon Unregistered on the Richter Scale’ is a looped video projection of an archived photographic image in which a room full of surveyors is transformed by Raqs through a series of subtle alterations. The photograph in question is titled 'Examining Room of the Duffing Section of the Photographic Department of the Survey of India'.