Funny story. I made this generator a long, long, LONG time ago. I know that I'm fundamentally and reliably lazy, so I know I didn't make this for no reason. I cannot think of a reason. So I'm guessing someone requested this generator. I have a hard enough time imagining why you need the plain diamond one... but half of them bisected in this particular fashion? Unfathomable. To ye who thinks they know the purpose of this monument to idiosyncratic meticulousness, inscribe thine secret on thine heart, and never die.
tldr: The author of this work does not know its purpose.
Update! This is used for sketching piping and wiring diagrams for factory machinery. If you want this in landscape format, simply set your page size to wider than it is tall (e.g. 11x8.5).