The invention relates to medicine and physical culture, in particular to devices and methods of the tests on the speed visually - patient s grasping of human reaction on free-falling object, and can be used in monitoring of professional abilities of population, of enabled as sorters on conveyors, rescuers, Cirque artists, sportsmen and T. U.Device for investigating speed visually - patient s grasping of human reaction, including hollow cylinder and scale, comprises a stand, installed on base for rotation around vertical axis, to which the fishing line, passed through hole in its upper horizontal part and provided with limiter, is suspended hollow cylinder, the scale is applied on the upper vertical part tripod, to which are attached guide ring.The technical result consists in NII to increase the accuracy of measurement due to fixation of cylinder at start and khvatayushchei hand on table under mounting pillar, elimination of voltage and discomfort in poses tested and examiner.