I was copy and pasting objects and they came 1/12 smaller. I used DWGUNITS and went through the following and helped me:
Command: -DWGUNITS
Drawing units:
1. Inches
2. Feet
3. Millimeters
4. Centimeters
5. Decimeters
6. Meters
Unit for length <2>: 1
Drawing unit display formats:
1. Scientific
2. Decimal
3. Engineering
4. Architectural
5. Fractional
Linear display format <4>:
Architectural linear display precision formats:
0. 1"
1. 1/2"
2. 1/4"
3. 1/8"
4. 1/16"
5. 1/32"
6. 1/64"
7. 1/128"
8. 1/256"
Linear display precision <5>:
Scale objects from other drawings upon insert? [Yes/No] <Yes>: n
Match INSUNITS to drawing units? [Yes/No] <No>:
** WARNING: you have changed the unit for this drawing database. **
** All new objects will be drawn according to the new unit, but **
** existing objects will not change size unless you specifically **
** ask to have automatic scaling occur. **
Scale objects in current drawing to reflect change in units? [Yes/No] <Yes>: n
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Thank you for this thread!