People ask me all the time how to offset a line with a slope not just a Vertical Delta Elevation. Because Offset Line has an Offset Value, the Elevation / Delta Elevation Control allows entry of a slope Ratio or Slope % and it will compute the Vertical Delta For you. So enter 3:1 or 10% and it will apply the slope and compute the elevation delta.

In addition, if you are given the Slope (2%) and the Vertical Delta (1.5’) then in the offset field you could enter 1.5/0.02 to compute the offset value.

Great little tip that saves pulling out the HP41 …

Alan