A hire company does not sell time, it sells objects — and an object is either on the shelf or it is on somebody's lawn. So the first screen is not a calendar of jobs. It is the stock, and the bar is the days each piece is gone.
Fourteen columns, one row per item. Nothing here is a booking — it is what the store looks like from the door.
This is what a calendar gets wrong about hire. The job is not a day — it is a van leaving and a van coming back, and the stock is unavailable for every hour in between, including the two nobody thinks about.
Signed on the tailgate. The same list is used to load out and to check back in, because two lists is how a chair goes missing and nobody can say when.
Hire looks like pure margin until the van, the crew and the replacement chair come off it.