Training Manual -- Signalling, 1907

addressor alignment ANSWER READER Army Form battery brigade cable caller Cautions and Words centre check letters cipher clamping screw classification clove hitch commander communication crookstick dash detachment distant station dots dummy key duplex mirror duties erased figures foot length GUILDFORD hand horizontal inches instrument jointed arm laid light main socket means method Morse Movement or Cautions moving necessary non-commissioned officer number of words Office of Origin pole possible prefix Ready receiving station reef knot reply to Number retort School of Signalling Section Semaphore sender sending station sent Service Instructions shadow spot ship or station sighting mark sighting rod signal station signalling mirror small flag spirit chamber stand tangent screw telegraph telephone telescope terminal station Territorial Forces tests transmitting station tubing unsilvered spot vertical wick words per minute writer دو دو دو