standard diameters for wooden dowelling?

Can I pick your brains please.
What are the standard diameters for wooden dowelling. I don't want the downright specialist sizes please because I hope to find it at one of my local DIY superstores!
My application is to use a very short length of dowell to replace an AAA or AA battery in order to run an electrical device all day. The dowell would have a drawing pin at each end with a thin wire attached which is connected to a 1.5volt power supply at the other end. IYSWIM!
The cell diameters are as follows:
AAA cell = 10.5mm (0.42") diameter AA cell = 14.5mm (0.58") diameter
What alternative material to wood could I use?
Thank you.
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What about a dead AA or AAA cell - should be about the right size - bit of insulting tape over the ends to prevent it interfering - add the wire as planned
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What about a dead AA or AAA cell - should be about the right size - bit of insulting tape over the ends to prevent it interfering - add the wire as planned
'Dead' cell's tend to leak over time and leave a nasty mess not recommended.
Ash
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We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember "Arfa Daily"

A second's googling... http://www.maplin.co.uk/noframes/261.htm
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saying something like:

Ha ! Waddya know ... Well spotted, Grimly old boy ! Funny that. I put every combination of "dummy" and "battery" and "cell" that I could think of into their on-site search engine, and it didn't return any useful results. I hereby declare you king of the keyboard, and authorise you to have an extra cup of coffee and a biscuit for your efforts ... :-)
Arfa
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