18 lines (14 with data), 342 Bytes

AnyDrawLine DimensionLine = {
  AnyRefFrame &ref1 = .refframe1;
  DirAxis=.DirAxis;
  p0 = {0,0,0};
  p1 = (.refframe2.r - .refframe1.r);
  Offset = .Offset;
  Text = .Text;
  GlobalCoord = On;
  Line.RGB = .RGB;
  Line.Thickness =.Thickness;
  TextFont.Width = 24;
  TextFont.Height = 24;
  TextFont.ModelSized = Off;
};