coming from denmark, where about 80% of all locks ruko http://www.ruko.dk/dk/site/rukodk/Produkter/Cylindre/
90% of these are 5 or pin tumblers(serie 500 and 600), looking at theire site i see they are part of the abloy/assa company, they sell yale pads, and apperntly they are doing some kind of buisness with Mul-T-lock(both Assa,Ruko and Mul-T-Lock uses the Cliq system)
stiil being a blazing amateur i was wondering if anyone had a gloryfied owerviev on the whole cyllinder marked, and maybe even some insight on which cyllinders is specific to wich companies(e.g. is the 500 & 600 series made by ruko before they became assa/abloy or is it just another lock with ruko stamped om it)
ok, i know its kind of an open question, but i think there is a lot to be learned bout the lock by knowing who made it, can even be helpful with rip-off locks(just bought a Ruma 50 beliving it was a nice ruko, and man does those designers know how to write brand names alike.)