Boston Airspeed Discrepancy

[crescent]

The indicated airspeed in the cockpit reads about 5mph more than the bombadier indicated airspeed. 

[steelhail]

well that's not good for level bombing

[blipoop]

That's due to the position of the gauge's and the crew looking at the gauge.

Going from memory here but I believe the pilot's view is more directly looking at the face of the gauge and would appear more accurate.

Whereas the bomber crew is looking down at the gauge and due to this oblique angle the crew member is seeing the needle pointing at a lower number.

[crescent]

They used to be equal for sure. I don’t believe it’s a parallax issue.