found on ebay, seems to be lab spec...
http://www.ebay.com/itm/Kayeness-Dynisco-D5097-Horizontal-Plane-Method-Friction-Tester/332073293357?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D41375%26meid%3D514d03afbce04b509f282c7f2403ea45%26pid%3D100033%26rk%3D4%26rkt%3D7%26sd%3D232232931230
_m
Maybe useful for DIY Lathe?
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