New Chainring for Pompino required

The chainring for my 2006 Pompino is worn out and On-One do not sell them.
Does anyone know where they are available, as I presume they need to be for 1/8" chains and I don't know the hole measurements!
Does anyone know where they are available, as I presume they need to be for 1/8" chains and I don't know the hole measurements!
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Do you not have the old one to measure?
"Cancel my subscription to the resurrection."
The pomp chainrings are standard road width (7/8?) not 1/8th. Work fine with an 1/8 chain.
http://www.sheldonbrown.com/gloss_bo-z.html#bcd
to measure the BCD, then bought one of the Thorn single speed chain rings as already mentioned.
Cheers.