Modesto2 From United States of America, joined Jul 2000, 2830 posts, RR: 5 Posted (10 years 7 months 6 days 15 hours ago) and read 1410 times:
What's the purpose of the A320's ND dual-knob adjustment? When adjusting the brightness, I noticed the outer (longer) knob affects the display while rotating the inner knob (shorter) doesn't have any effect. So, what's the purpose of the inner knob? Thanks.