Attached are the results I got. I set the precision in the two places you suggested, then made a horizontal line and attached the highlighted line to it at 16Â°32'30 as shown in the selection information box. Then using the angular dimensioning tool with round off set as noted on the attached image, you will see I have to have the round off at .00001 get a result even close to the plotted angle. How the seconds can vary as much as shown on the image seems to me to be wrong. There does not seem to be a way to get the proper result. Hopefully I am doing something wrong and someone can steer me right.