35 buck Chinese Machinist's Level overhaul and cralibation (!)

[Unkle Fuzzy]

To mount the vial in it's tube...Rock Hard Water Putty. Looks exactly like what is in there.

I've used it for years to bond new brass necks onto glass oil lamp bodies.

It's literally, as the name states, hard as a rock, and sets with out any shrinkage.