a Multi-Purpose Articulated Folding Ladder. The specification “$4 \times 4\text{M} (4.7\text{M})$” breaks down as follows: $4 \times 4$ (Configuration): This indicates an articulated ladder with 4 folding sections, and 4 steps/rungs on each section, giving a total of 16 steps.1 $4.7\text{M}$ (Maximum Length): This is the approximate length of the ladder when it is fully extended into a single straight ladder configuration.2
