I-1.Iteknoloji ye-bolt eyodwa ekhethekileyo ivumela abasebenzisi ukuba balungelelanise i-cushion yokuhlala kunye ne-backrest ngexesha elifanayo.
I-2.Isiphatho sokutsalwa phantsi kunye ne-pulley ilungele ukuhambisa izixhobo.
3.Kukho ii-angles ezi-7 ezahlukeneyo ezinokuhlengahlengiswa ukusuka ekulaleni ukuya kuma-70 degrees.