I'm looking to replace a powder measure hopper on a progressive reloading press that is long defunct. The tube required is an odd size, but I can make a piece of 1 1/2" I.D. work. The issue is that most companies that sell this stuff will only sell it in 8' or longer lengths. I need a piece that is 10" long. Does anyone know a source.

You might try polycarbonate shipping tubes:

Plastic Tubes, Clear Plastic Tubes in Stock - ULINE

Uline sells them by the carton but you might be able to find them individually some where else.

Thank you. I appreciate your response and I'll keep that one in mind.
My google foo ended me at eBay of all places and you can purchase individual pieces rather cheaply. 1 1/2" X 2' for under $20. I wouldn't have figured eBay for this stuff.

Sinclair International is a division of Brownell's and sells numerous brands of powder measures. They have replacements for most brands. Plus they have replacements is other than original length, both shorter and longer. You might check them out.

Ivan