A Shelf for on top of a computer monitor the legs are teethed so that the angle can be adjusted. The shelf dimensions are 225mm x 150mm.

Mine is set up so that the Leg with the pin is on the right and the just plain leg is on left (if you would need to get different degrees of angles you can't get with the leg and pin on right you can switch them). The teeth make it so that you don't have to tighten down extremely hard on the nut just enough to keep them in the teeth.

If you don't use the print profile and just download i would recommend using a height range modifier for the nut and leg & pin for the threads i used .12 layer height and increased walls to make it solid for thread area. The NUT NEEDS TO BE SCALED for clearance-- 103% in X & Y plane worked me, make sure uniform is turned off. i also blocked supports for the threads so they didn't get messed up and for the slowed the layer time down to 7 sec. and min print speed to 14 so the threads would be ok but i was using generic filament.