Re: a 15 degree per hour drift
Bob Knodel's “What we found is, is when we turned on that gyroscope we found that we were picking up a drift. A 15 degree per hour drift” has become a popular meme for FE debunkers (yes, it's a thing) and is generally played on their videos any time Globebusters is mentioned.
But what's funnier is their attempts to come up with a flattard compliant "theory" to explain it - everything from "it was precalibrated to show a drift" to "It's measuring the heavenly harmonics in the aether"
Proof? they've heard of it