idOwner=S-TEK&idIdentifier=TEKI0014188http://kulturarvsdata.se/S-TEK/photo/TEKI0014188RådataPhotoTEKI0014188Optiska telegrafen, frontvy.
Lavering från 1838 av Fredrik Akrell.Telegrafoptiskhttps://mm.dimu.org/image/0231wU1av3uD?dimension=145x105https://mm.dimu.org/image/0231wU1av3uD?dimension=600x600https://mm.dimu.org/image/0231wU1av3uD?dimension=1200x1200http://kulturarvsdata.se/resurser/License#pdmarkhttp://creativecommons.org/licenses/mark/1.0/http://kulturarvsdata.se/S-TEK/photo/xml/TEKI0014188http://kulturarvsdata.se/S-TEK/photo/html/TEKI0014188http://kulturarvsdata.se/S-TEK/photo/rdf/TEKI0014188Tekniska museetS-TEKphoto1.12024-03-25