Erection near shore of a tidal river, to indicate height of tide by a system of floats with a connected pointer that moves over a graduated board.
Uvuselelo ecaleni lonxweme lomlambo wozaliso norhoxo, ubonisa ubude bozaliso norhoxo ngesixokelelwano sojinga-jingo oludityaniswe nesikhombi esihamba phezu kwebhodi