> With all due respect you haven't grasped the key point here. The statement > "1 yd = 0.9144 m" is not just a conversion factor. > > It is a *definition* of the term "yard".
It is interesting to note that not only is a yard defined as 0.9144 m but the inch is not defined as 1/36 of a yard but as 25.4 mm (exactly). Therefore, customary measures are all defined by metric ones and not in relation to each other. Phil
