These touch the key directly and vary in length to match the key’s cuts.
The title at the bottom right corner read, simply:
Julian added the final arrows. The diagram was a chaotic spiderweb of lines pointing to components: Spindle, Thumbturn, Wood Screws, Machine Screws, Faceplate.
Julian picked up his mechanical pencil, the lead hovering over the paper. He was tasked with updating the technical manual for the 'Sentinel Series,' and he had to make sure that any homeowner with a screwdriver and a prayer could understand the magic inside their door.