Abstract: A method for measurement of axial forces acting on a shaft, being supplied with gas under overpressure such that gas pressure is built up between two opposing faces of said portion projecting radially from the shaft and at least one gas-permeable body provided external to said faces. A gas differential between the gas pressure on said opposing faces is established, and the axial force acting on said shaft is determined as a product of a constant and the pressure differential between the gas pressures on the two faces. Means are provided for supply of gas under overpressure to said body and pressure measuring means are provided for measurement of the pressure differential between the pressures on the two faces of the radially projecting portion. The protruding portion may also constitute a measuring plate which, provided in various manners, is subjected to forces.

Abstract: A rheological measuring device comprising a rotatable shaft 911), a first measuring body (12) operatively connected to a first end of said shaft (11) and a second measuring body (13) operatively connected to said first measuring body (12) through a sample medium (10). Said sample medium is enclosed in a sample chamber (14) defined by said second measuring body (13) and a slot seal (15) provided around said shaft (11) and being exposed to overpressure, said overpressure of the slot seal resulting in said sample medium being exposed to a pressure. Said pressure is transferred to said sample chamber through a space formed as a prechamber (19) formed in a lid (16) arranged over said second measuring body (13).