I am thinking about roleplaying a Rock Gnome, and was wondering whether my interpretation of the Tinker trait was correct.
The rock gnome's tinker Trait (PHB pg. 37) says:
Using those [tinker's] tools you can spend 1 hour and 10 gp worth of materials to construct a Tiny clockwork device (AC 5, 1 hp). The device ceases to function after 24 hours (unless you spend 1 hour repairing it to keep the device functioning).
From this sentence, I understand that repairing the device requires only 1 hour of work (no materials) and, most important matter, that the repair grants another 24 hours of life to the device. Is my interpretation correct?