N Gauge is a model railway scale that represents a ratio of 1:148, meaning that one unit on the model is equivalent to 148 units in real life. This scale is popular among hobbyists because it allows for detailed layouts in smaller spaces compared to larger scales like HO Gauge or O Gauge. Trains and scenery in N Gauge are typically smaller, making it easier to create intricate landscapes and track configurations. The standard track gauge for N Gauge is 9 millimeters, which contributes to its compactness and versatility in model railroading.