List of rail transport modelling scale standards - Wikipedia
This page lists the most relevant model railway scale standards in the world. Most
standards ... Model railway scales and gauges are standardized in NEM 010,
which covers ... to use normal gauge of smaller scales as narrow gauges for a
certain scale. ... 1, 1:32, 45 mm (1.772 in), 32 mm, 22.5 mm, 16.5 mm, 12 mm, –.