Flap Position Indicator Boeing B-17 PN 5911-12 PZL very similar to AS-27A of

very similar to AS-27A of the ARN-5 system used in bomber and transport aircraft of the US Army Air Force

This artifact is in good cosmetic condition given its age

which essentially translates to Radium Expires 15 Sep 1943

It is in terrific condition given its age

Flap Position Indicator Boeing B-17 PN 5911-12 PZL very similar to AS-27A ofThis is a Flap Position Indicator as used in the US Army Air Force Flying Fortress B 17. The part number has been confirmed in the B 17F Erection and Maintenance Manual dated 1942 and the G model dated 1944. See photo of the indicator on the B 17 instrument panel. Measures 3. 25 in diameter and ~4in deep. The dial markings are clear and the glass and case are intact.