FIELD: construction.
SUBSTANCE: device comprises a frame consisting of columns and crossbars. The device additionally comprises a movable hinge-rod mechanism consisting of three vertical support rods, two of which are pivotally connected to each other and to the rod supports, a threaded stud connected horizontally to the third support rod, and a compressed spring disposed around the stud.
EFFECT: convenience, mobility in laboratory tests and reduced labour intensity.
2 cl, 3 dwg
