yeah!!

a tiltmeter is the same concept as a carpenters bubble.
it messures tilt, and rise and fall.
this is a very good way to get an idear of the dynamics of inside a volcano, and how certain fetures act.

in this case, the metters are a good way to get info on quickly esculateing ground deformation assosiated with magmatic movements.

in the case of Kilauea volcano in the hawian islands, tiltmeters indicate the slow ejection of the magma chamber, then its recharge.
as it declines the magma chamber emptys.
as it asends back up, the magma chamber refills.....

heres info regarding eruptive episodes

[link to en.m.wikipedia.org]

could we be seeing the start of the same kind of episode at yellowstone?
every volcanos diffrent
but cycles can tell us a lot

[link to pbo.unavco.org]