For storing your Mitutoyo calipers that are longer than 6". The -197 model, for reference is for taking measurements up to 8" (200mm) (but is nearly 11" in overall length). This model is split into two parts to fit on a 200x220mm print bed, as well as allow you to move the end piece for longer calipers.

I referenced this model to remake it: https://www.printables.com/model/490293-gridifinity-mitutoyo-calipers-500-196-30-holder

In my personal photo, my printer froze up while printing the brim. I decided to call it quits there, since I don't need it to stack in my setup.