This is a course on a tutorial on using the ACCA duct slide rule.  If your state exam focuses heavily on the ACCA duct slide rule, this 1-hour course could be a tremendous help in achieving a passing score. All of our online seminars are professionally narrated and animated with graphic illustrations of the concepts being taught, and our web-based presentation system tracks your progress so you can work through the materials at your convenience, resuming where you left off with each login.