Dome Decibel Meter. Have I been living a lie?

SaintKenKen said
(I'm still going to try to bring a decibel meter somehow. I'm a big nerd and curious)

You can just use your phone, and an app. If you have Android this one is rated 4.7 stars - https://play.google.com/store/apps/details?id=com.sweetvrn.tools.soundmeter

But there are plenty of options.

The problem with this is, if you get different results from the dome meter, which are you going to believe?