Thanx to all for your replies.
GR,piss off! Of course,I've heard of IPCs.My point is;can metric hardware be exchanged(in non-specific situations)across metric aircraft,e.g;an operator having Aerospatiale/Eurocopter types or an operator having Airbus types.When I was trained,we recieved virtually no gen on Metric hardware,whereas we got loads of gen on US stuff and a little on UK stuff.There does not seem to be an equivalent book out there for metric stuff,in the same fashion as the APs/CAIPs.I do some work on Permit types and am coming into contact with metric stuff more often and I could really use the gen.
thanx again
TDD
PS: remember the Ford Motorcraft voltage regulators on 172s?