Remix of 30mm Rifle Scope Bubble Level by ejulrich 
[https://www.thingiverse.com/thing:2055428](https://www.thingiverse.com/thing:2055428)

Not much going on here.  I just modified a 30mm ring to make it fit a 34mm scope tube.  I like this type of scope level, as it is pretty tough, easy to see, and it does not stick out far enough to make it hard to fit into rifle cases.

Uses tube type bubble level, 22mm long by 8mm diameter.  I bought a 10 pack from alab.design on ebay, but I see them availble on Amazon also.

Hardware:
1 m3 screw, 16mm long
1 m3 screw 25mm long
2 m3 nuts
I would suggest buying a box with a variety of m3 screws, nuts and washers, as they are used commonly for 3D printing projects.  Buying packs of various lengths of screws will end up costing more in the long run.