U.S. Service Issue Pocket Signal Disk for Semaphore and Morse Code Practice game set used to hold them up

used to hold them up and make them dance

and about 15 1/2" across (I measured nose to raw edge when folded: 7 3/4" on each side

Otherwise it is in very good condition

surrounding by illustrations of heart

U.S. Service Issue Pocket Signal Disk for Semaphore and Morse Code Practice game set used to hold them upThere were a few different iterations of double sided "Pocket Signal Disks" like this one I've seen one issued by the Boy Scouts, one from WWI, and this one from WWII designed for practicing two arm Semaphore and International Morse Code. Tons of information is densely packed onto both sides, with interactive dials allow one to scroll through a range of "special flags" and "alphabet flags" which correspond to flag positions and codes. I really love