1943 Northrup N3 Patrol Bomber & Sperry Ack-Ack Artillery - Gyroscope Ad

This original 8.5 x 11" magazine ad from 1943 showcases two remarkable aviation products from WWII.  On the front is an ad from RBC Needle Bearings showcasing the Northrup N-3 Patrol Bomber as an example of plane using its product.  On the reverse is a  ad from Sperry Gyroscope Company explaining how it's technology allow the Ack-Ack Flack artillery to see, hear and think!