G scale (English Wikipedia)

Maßstäbe, Nenngrößen, Spurweiten [Scales, nominal sizes, gauges] (Specification) (Report). Normen Europäischer Modellbahnen NEM (in German). 2011. p. 1. I/IIm/IIIe/Vi/Vilp … Modell-Spurweiten 45mm ¹⁄₃ Zoll. (6) Für große Spurweiten ist auch die Angabe in Zoll üblich.

nmra.org

S-1.3 Standards for Scales with deep flanges (Standard) (Report). National Model Railroad Association NMRA Standards. 2009. p. 1. The term LS (Large Scales) is used to refer to range of scales developed to be able to be operated together, typically in an outdoors setting, for example a garden. LS models all use the same wheel and track profiles to facilitate interchange.
S-3.3 Standards, Guarded Track, for Deep Flanges (Standard) (Report). National Model Railroad Association NMRA Standards. 2010. p. 2. Large Scales … covers all common commercial scales running on LS 45mm gauge track (1:32, 1:29, 1:24, 1:22.5, and 1:20.3) without regard as to whether the trains are standard or narrow gauge.

"Rolling Stock". Wright Way Rolling Stock. Archived from the original on 7 November 2006.

"Rolling Stock". Wright Way Rolling Stock. Archived from the original on 7 November 2006.