Manuell växel på en kuggstångs bana
Postat: 2013-06-12, 13:24
Kan vara nått för nästa bergiga modul 
9 step manual train track switch
"A 9 step manual train track switch on the Mount Washington Cog railroad. It is the most complicated switch in the world. The moving parts weigh 200lbs"
En lite enklare version modern cog railway switch
9 step manual train track switch
"A 9 step manual train track switch on the Mount Washington Cog railroad. It is the most complicated switch in the world. The moving parts weigh 200lbs"
En lite enklare version modern cog railway switch