Imperial is a pain in the arse, when it comes to PCB design. It seems that most editors has imperial units as base units in the database, and that creates round-off problem when working in metric. Since most Chip manufacturers is moving from imperial to metric it creates a problem. With best regards Tomas Larsson Sweden http://www.naks.mine.nu for downloads etc. ftp://ktl.mine.nu for uploads. Or use the free www.yousendit.com service. Verus Amicus Est Tamquam Alter Idem -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist