FIELD: mechanics.
SUBSTANCE: installation comprises a base, an active and a passive sample gripping units set on it, a lever connected to the active gripping unit, a roller with a latch kinematically connected to one lever arm, a bar connected to the roller by one end, a weight element set on the second bar end. A bow guide is fixed on the lever with a roller being set on the guide and able of travelling along it; the latch is made so that to provide for the bar turn in the guide plane.
EFFECT: expanded functionality.
5 cl, 1 dwg
