The machine and method are particularly suited for measuring the coefficient of friction between a rubber specimen or a tread element and {HEAD ~ different friction surfaces} at different sliding velocities, {TAIL ~ contact pressures} and orientations 
The machine and method are particularly suited for measuring the coefficient of friction between a rubber specimen or a tread element and { HEAD ~ different friction surfaces } at different sliding velocities , { TAIL ~ contact pressures } and orientations
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH