Horizontal pull slipmeter

Static slip resistance of footwear sole and heel materials can be measured using a horizontal pull slipmeter. The force required to cause one body in contact with another to begin to move is called static slip resistance. The ratio of the force required to initiate movement and the perpendicular force between surfaces is known as coefficient of friction. Coefficient of friction multiplied by a factor of 10 is known as slip index and this is measured by the horizontal pull slipmeter. Similarly, the result of measurement of slip resistance may not fully predict resistance to slipping while walking. Surface of tested materials is slightly sanded to remove the effect of mold release materials. 

ASTM F609-05(2013) Standard Test Method for Using a Horizontal Pull Slipmeter (HPS). 

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