Originally Posted by Lister Noble
Undid the edit.
The multiple units in the ASI are very confusing,especially around the flap operating range where the numbers are crammed into a small area.
After a while you get to know where the needle is pointing, but at first rather confusing at the student early learning stage when you really need them!
Much better to have just one unit,mph or kts clearly marked.
There have been some very helpful and constructive replies to this thread.
Many thanks
Lister
This is, of-course, why there's a convention for colour coding of ASIs.
It often irritates me that in replacing U/S instruments, or sometimes at new builds (particularly for permit aeroplanes) it's not always ensured that the colour bandings are restored in the right places. Frankly the (common) display of a placard with operating speeds is no substitute for a white arc for flap limits, amber between Va/Vra/Vno and Vne, and so-on.
G