5.5mm scale is used for modelling narrow gauge railways. 12 mm (0.472 in) gauge track is used to represent 2 ft (610 mm) to 2 ft 3 in (686 mm) gauge prototypes. 16.5 mm (0.650 in) gauge track is used to represent 3 ft (914 mm) gauge prototypes.
Read more about 5.5mm Scale: History
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“Every man needs slaves like he needs clean air. To rule is to breathe, is it not? And even the most disenfranchised get to breathe. The lowest on the social scale have their spouses or their children.”
—Albert Camus (1913–1960)