Consider adding a small level at right angles to the main vial to your design. Precision levels include this because a slight tilt of the level base can affect the main vial centering. The cross vial sensitivity can be much less than that of the main vial. One scavenged from a hardware store well most likely work.
Hopefully I will receive it tomorrow so I can get cracking on finishing it on Monday.
I have no special divining powers. The invoice says that your order "Delivers Monday". McMaster is pretty good with deliveries.
Don't they have self-serve locker pickups at their centers?I know it says Monday. As I live less than 12 miles from the McMaster shipping center. Often times it comes the next day. That is why I stated “I hope” in my post.