G scale

G scale or G gauge, also called large scale (45 mm or 1+3⁄4 inches), is a track gauge for model railways which is often used for outdoor garden railways because of its size and durability.

LGB products were intended for indoor and outdoor use; so the "G" became interpreted as "garden scale".

44.45 mm for 1 gauge , but that does not determine the scale to which the models are built because, to maintain a constant track width when real-life counterparts have a variety of railroad gauges, the scale has to vary.

The most common full-scale practice uses a spacing of 4 ft 8+1⁄2 in (1,435 mm) standard gauge, whereas some narrow-gauge railways (serving mines, etc.)

Although often built with standard-sized doors, a narrow-gauge train is in most other respects smaller than its standard-gauge counterpart: its cars are generally narrower and shorter, allowing them to navigate more sharply curved and lightly built tracks.