Modesto2 From United States of America, joined Jul 2000, 2769 posts, RR: 6 Posted (9 years 9 months 4 weeks 1 day 21 hours ago) and read 1270 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.