A graduated square or round straight or jointed folding brass rod with attached ring; used for measuring the depth of liquid contained in a space.When ordering, specify the shape of the rod, the length, and the number of folds.
A graduated square or round straight or jointed folding brass rod with attached ring; used for measuring the depth of liquid contained in a space.When ordering, specify the shape of the rod, the length, and the number of folds.