The font has some unique features, including no serif on the number 1, and flat tops on all the number 3’s also look at the & and A and W.
| Attachment | Size |
|---|---|
| Chart from B-17 Pilots Manual.JPG | 548.84 KB |
| Chart Boeing Blue Prints.JPG | 539.43 KB |
| Boeing Chart blueprint detail.JPG | 363.97 KB |