Hi, I use 3 scales for my models: 29ps, 11ps, and minifigure. The "ps" means per stud. A minifigure meter is 3 studs, so I take a measurement in meters x 3 = the measurement of the model. To figure out something smaller, I divide: measurement in meters / "per stud" = the measurement of the model. I really like Star Trek, as you may have guessed, but you will see other models on here too. The reason I'm sharing my models is to spread the word, to put it mildly, not enough people make Star Trek models. It's sad really.