Posted by Ken Sturgeon on August 08, 2001 at 00:53:50:
I've been trying to figure out the bore size of my Alex F. I don't have any bore measuring equipment and before I take it to a shop, I recall someone posting an old advertisement for Alexander tubas with the bore sizes listed. I searched the archives to no avail, but if the original poster is out there would you please post it again? If anyone has any other information helpful please comment. It is a 1940's vintage Alex F with 4 valves. Thanks!