New ferrules take their dimension from the diameter of the walking stick, i.e. the distance edge to edge of the circle as you look at the stick end on – without the ferrule on. It is usually enough to use a ruler, or tape measure and place it across the end of the wooden stick and simply measure across.
Click [here](https://en.wikipedia.org/wiki/Walker_(mobility)) to read more about walking aids.
• Rubber ferrules for crutches
• Walking stick ferrules 15mm
• Walking stick ferrules 19mm
