There's NO Substitute for Marksmanship! Training Booklet, US Navy 1942 F-82 Knowledgeable visitors are invited to

Knowledgeable visitors are invited to email us with any information that you may have on this curious timepiece

but only intermittently changes the barometric display

though slow

This example is definitely experienced by in terrific condition given its age

The knob at the lower left adjusts the flow of air through the pneumatic connection to the gyro inside

There's NO Substitute for Marksmanship! Training Booklet, US Navy 1942 F-82 Knowledgeable visitors are invited toThis is an original WWII era training booklet published by the US Navy's Aviation Training Division in 1942. This 18 page, comic book style booklet was intended to sensitize pilots regarding marksmanship in fixed gunnery. The 7 inch by 9 inch booklet is in very good condition given its age.