FIELD: medical engineering. SUBSTANCE: device additionally has two independent units for measuring spatial accuracy having common zero reference point. The units are enclosed into one and the same structure having upright through which two ends of flexible link pass and two rings are fixed on its upper end. The rings are connected to measuring coils by means of the flexible link. The coils are mounted on transformer shafts. The rings are also connected to receiving coils provided with flexible link return and tension adjustment mechanisms. Electric signals from the transformers are displayed on counting unit &Dgr; and indication unit. EFFECT: enhanced accuracy of diagnosis. 2 dwg
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