I have a project that would be easier with a long aluminum pole (16 feet)
does any one have any idea what type of suppler might carry this.I'm in the
Baltimore/Washington area so I'm not asking for a company name ,but would
take if you got one.

Len

Not having specifics on the diameter you might look into:

http://www.texastowers.com/aluminum.htm

They've been useful to Amateur Telescope Makers in the past and don't
seem to mind "minor" orders.

Crazy Ed