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As you know it's not perfectly square or circle. But it's more square than circle. So from front to back its 3". From side to side it's 2.5".
AKA apx 76.20mm long, 63.5mm wide.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/428559/3889607.page http://www.dakkadakka.com/dakkaforum/posts/preList/428559/3889607.page GMT http://www.dakkadakka.com/dakkaforum/posts/preList/428559/3889693.page http://www.dakkadakka.com/dakkaforum/posts/preList/428559/3889693.page GMT