Transmission arrangement 1, wherein said feeler roller is formed with a hub, has roller bodies disposed for rolling on said hub, and a race carried by said roller bodies, a ratio of a respective diameter of one of said roller bodies to the diameter of said hub being such that said roller bodies, in said {HEAD ~ second operational setting} of said {TAIL ~ second transmission linkage} assume at least approximately the same relative position with respect to said race as in said first operational setting of said second transmission linkage 
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Transmission arrangement 1 , wherein said feeler roller is formed with a hub , has roller bodies disposed for rolling on said hub , and a race carried by said roller bodies , a ratio of a respective diameter of one of said roller bodies to the diameter of said hub being such that said roller bodies , in said { HEAD ~ second operational setting } of said { TAIL ~ second transmission linkage } assume at least approximately the same relative position with respect to said race as in said first operational setting of said second transmission linkage
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