They do so well that these almost get boring. I had trouble with my Beall tilt box that I got from LV about 6 months ago. Zero and 90 ewre fine but there was an increasing degree (no pun intended) of error as you headed for 45 where it maximized. The error reversed if the box was spun 180.
Used static measuring devices in the shop and a Wixey to verify that the only thing that didn't agree ws the Beall. Wrote LV to ask if I should talk to them or Beall; their response:
We would be happy to deal with this for you.
Would you like to exchange it for another one? If so we can send you a replacement and a Return Label to use to send the original back to us.
We look forward to your reply.
Internet Customer Service Representative
Sigh, . . . typical . Don't you wish it was typical of so many others?