It's not an altimeter, it's an artificial horizon. It looks cool, but why is it there?
BTW I like the banner as is. It seems kind of '70s-style classic era.' Keep it as is!
Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to convictions of honour and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy.
Winston Churchill, 1941.