RicB, There were, over many years/countries different designations for wire sizes. Some, specifically pertained to steel, while others specifically to copper. The whole picture blurs with integration of these systems. I'd have to look it up in my "statistics" book. If it were me, I'd just take the micrometer readings, (in mm for European pianos and decimals for american. The British really screwed things up with their own designations.<G>), and translate to known wire sizes of today. Also, if the wire "feels" limp, it's not "modern" steel wire, but rather "cast/iron" wire. That's a whole different bucket of worms. For that, I'd defer to Malcom Rose for clarification. Best Regards, Joe Garrett, RPT, (Oregon) Captain, Tool Police Squares Are I
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