e-39 whisker pole

Can anyone tell me how to figure out the size of whisker pole I would need on my e-39. I was in a marine consignment store today and they have some at good prices, but I'm not sure what I need. I have a 110 and a 150 .

thanks
John

whisker pole length

Check out this sailnet discussion on whisker pole length: http://www.sailnet.com/forums/gear-maintenance/33488-whisker-pole-sizing.html

used pole

I saw one in a Bellingham consignment store and that is the reason I asked. It's 17 ft long and I thought it looked huge but I quess it is about right. It has to be a 4"D aluminum tube and has a long tapered cylindrical end.

I'll go and look at it again and get it if it is in good condition.
Thanks
John