FLAG SEMAPHORE
two flags, eight positions 45 degrees apart — all 26 letters; after the numerals sign A–I read as 1–9 and K as 0
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
Shown as the reader sees it: you are facing the signaller, so left and right are mirrored for the sender. The red-and-yellow Oscar flags are the maritime set. Error is the letter E signalled eight times. All 30 positions checked against the standard chart (Wikimedia Commons) and The Scout Association sheet "Semaphore signals". Checked 2026-08-13.