HO scale model trains are a significant part of model railroading history, and we can partially credit the overall popularity of model trains with the rise of a convenient, tabletop scale like HO.

You can build a model of the Great Pyramid, but first you need to scale it down. To do this, you will need to make the pyramid 3,000 times smaller than it really is! To achieve that, every 30 ...

The Multi-Scale Modelling (MSM) group at the Institute for Atmospheric and Earth System Research (INAR) researches and develops atmospheric and Earth-system models, ranging from microscopic scales to ...