It’s a fantasy unit you can use when writing a story about dragons and wizards. Sort of like this:

In the harmonious town of Metricville, life was a symphony of simplicity and precision. Every measurement, from the smallest millimeter to the grandest kilometer, was a multiple of 1000. This elegant system made calculations a breeze, fostering advancements in science and technology. The townspeople thrived, their lives intertwined with the beauty of sensible units.

However, in the shadowy town of Chaosburg, an evil necromancer named Malgath seethed with envy. He despised Metricville's success and the clarity their units brought. Driven by hatred, Malgath devised a sinister plan to plunge Metricville into confusion.

One stormy night, Malgath cast a Foul Spell of Demonic Confusion over Metricville. The once orderly units twisted and warped into a chaotic mess. Millimeters became inches, meters turned into feet, and liters morphed into gallons. The multiples between units were no longer a neat 1000 but a bewildering array of 12, 14, 21, or anything Malgath desired.

The townspeople awoke to a nightmare. Simple tasks became arduous challenges. Architects struggled to design buildings, scientists found their experiments in disarray, and even cooking a meal became a perplexing ordeal. The once thriving town was now mired in confusion and frustration.