> By the way, an electrical circuit design text copyrighted 1975 uses > the "master/slave" terminology. So this is a long-standing technology > usage.
It goes back _WAY_ further than that. It is used, for instance, in automotive engineering. A car with hydraulic brakes - pretty well every car built since the early 1920s - has a "master" cylinder attached to the pedal and "slave" cylinders on each wheel hub. The same applies, of course, to hydraulic clutches. It would be apposite to return to this organisation and ask them if they are requiring the suppliers of their fleet vehicles to provide service documentation using alternative nomenclature for these hydraulic devices. -- Phil Payne http://www.isham-research.com +44 7785 302 803
