To clarify a little...
The first picture shows "square" on the stands. You will never see that real world.
Instead, you'll see something more like the second picture. The key is that should read the SAME on both sides. As long as the reading is the same left to right, your thrust angle is correct. Note that the reading will not be identical on different axles unless you have identical toe readings. The built in rulers are used ONLY for thrust angle and watching toe movement. Precise toe measurement is off the tape measures.
(Edited to upload correct second picture.)
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2011 M3
2006 Sierra 2500HD 4WD LBZ/Allison
2004 X5 3.0i 6MT
1995 M3 S50B32
1990 325is
1989 M3 S54B32
Hers:
1989 325iX
1996 911 Turbo
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