Salt Lake-based Dynatronics Corp. has announced records sales for fiscal 1998 of $12 million - a 21 percent jump over the $10 million sales in the prior year. Net income also climbed, rising 9 percent to $664,788, compared to $612,539 in fiscal year 1997. Dynatronics manufactures medical devices, orthopedic soft goods, nutritional supplements and other related medical supplies.