Grand Seiko lift angle

Hello all,

I am new to this forum, this will be my first post.  I have just added a Grand Seiko Heritage 60th Anniversary L.E. (SBGR321) to my collection and, especially with it being a used watch, want to throw it on my Weishi 1900 to get an idea of its accuracy.  I am finding a lot of lift angle charts online, but none of them seem to include Grand Seiko.  Any ideas about how to find the exact lift angle for this watch?

Thanks in advance for any input,

Andrew