Entire Drawing Rotated Slightly

[Anonymous]

So a while ago I rotated everything in my drawing exactly 90 degrees, or so I thought. Turns out it's between 1 and 2 degrees off of that, so now whenever I try to draw a line with Orthomode on, it shows that the entire drawing's slightly off. What's the simplest way to get everything back to perpendicular?

[pendean]

The hard way with ROTATE command: start UNITS command and incrrase all precisions to the maximum.

Then select a long line on your floor plan for example, look at its angle in PROPERTIES, and correct accordingly with ROTATE command back to 0.0 or 90.0

Repeat for all contiguous drawings in that file.

[GrantsPirate · Accepted solution]

ROTATE command with the Reference option.  Set Ortho to on or at least Polar on.

Click on link below for video explanation.

https://autode.sk/2VOPL6b

[leeminardi · Accepted solution]

Rather than using rotate I think it is much easier, and more accurate, to use the align command.

Try the following.

1. With Orthomode on draw a horizontal line from the end of a line that is slightly rotated but should be perfectly horizontal (the red line below).
   
2. Give the align command and select all the geometry you want to rotate. The using osnap END click at #1 for  first source point, #2 for first destination point, #3 for second source point, #4 for second destination point followed by [Enter] twice.