The NMRA has been touting November as Model Railroading Month. In keeping with that, I decided after all these years to bring a couple of O scale (2-rail) items to the office that I could easily lock up in the evenings. I decided to keep it simple, though a couple of coworkers are encouraging me to bring in a loop of track and a transformer (which will really make management happy with the noise). I'm going to switch them out over the remainder of the month. I also included information on the prototypes and the model. O scale -- trains you can actually see. 
