These ladders are constructed from F.S.W.R. strings 12 inch apart and 15 inch x 1⅜ inch Canadian elm rounds.
Ezi leli zakhiwe ukusuka kwiF.S.W.R kumtya olishumi elinesibini lee-intshi ukwahlukana neshumi lesihlanu x1? yee-intshi kumntu waseCanada waye nawuphi umthi wodidi olurholofu oluqoqiwe wegqabi.