G scale guitar chords
G gauge track has a spacing of 45 mm between the railheads (tracks) (c. f. 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. ) have rails only 3 ft (914 mm) apart. 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 lighter built tracks.