Hi David,I had an artical accepted for printing just before the change over,do I have to resubmit it.It was from a English Mechanic and Mirror of Science magazine of 1868,about a steam or air engine made by M Eugene Bourdon (inventor of the Bourdon tube).There is an etching diagram.I’ll send it snail mail if thats alright with you,I’m not too up on this thing yet!