Hi folks, I can't find my copies of ME from that period, if anyone can have a quick look and tell me what size and length the various tubes are and whether or not it's acceptable for them to be rolled or whether they need to be seamless it would be helpful from memory they mentioned a heated area equivalent to a decently sized 7 ¼" loco boiler.... QA Engineer Vicon Motion Systems, Oxford. ________________________________________________________________________ This e-mail, and any attachment, is confidential. If you have received it in error, do not use or disclose the information in any way, notify me immediately, and please delete it from your system. ________________________________________________________________________ MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.