FIELD: equipment for training of sportsmen, in particular, in heavy athletics. SUBSTANCE: apparatus has four columns, four light emitter - photo-detector pairs attached to four columns by means of four supporting rods and four slides, which are soldered to these rods. Two light emitters are fixed on each of two columns and two photo-detectors are fixed on each of other two columns such that light beams emitted from light emitters are directed into related objectives of photo-detectors. Photo-detectors are electrically connected with converter and light indicators. Bar is disposed between columns to interrupt light beams during displacement. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg
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