Ok. What IS that little leather thing on the bottom of your gunsight?
I can't for the life of me remember because it was so obvious and practical like perhaps for turning on the GS or something similar, that it came up un list of conversation about being a pilot etc. I will look it up.
Closest thing I could find with keywords I used is a "Rubber Crash Pad" only found in a diagram with no explanation. I assume it's for resting your hand, that rings a bell the most for me.

p.s. I'm sure we have some pilots in here that know that might chime in!
