How to measure a 2d distance or draw a flat line at a specific elevation
This video covers 2 system variables in AutoCAD, OSNAPZ and ELEV.
You can use both of these variables to:
(1) Measure the 2d distance between two points (https://surveyorinsider.com/measure-2...)
(2) Draw a line or trace existing objects but the line you draw is flat (https://surveyorinsider.com/draw-flat...)
Watch the whole video to learn more about these two system variables.