Symbol 5580 from IEC 60417 - Title/Meaning: Zone focus, long distance Function/description: To identify a long focal distance.
Additional information: 
This symbol is to be used in conjunction with one or more of symbols 5577, 5578 and 5579
Minor editorial improvement agreed by the Change Request was reflected after the release on 2002-10-07
Published in: Supplement M, 1994
Own work using: iso.org/obp/graphics/grs/9b182dec-4b78-497b-9be1-d2dd6341c434 200.png
Vectorization:  Mrmw