737-800 yoke

[Dude~]

Can anyone tell me what the three scroll wheels are for on the right hand side of the captains yoke on the B737-800? It appears to be an anaolgue display of a 3 digit number, but what's it for?!

Cheers,

[Bokomoko]

It worked as a flight level or flight number reminder... well, at least for me.
:ok:

[Herod]

Lots of things, but one of the most useful is the minimum safe altitude during departure and arrival. Alternatively, number of cups of coffee drunk during a long sector.