Standards
The differences in the various O gauge and O scale standards can be confusing. O gauge model railroad tracks typically have their rails spaced 1 1⁄4" or 32mm apart with the National Model Railroad Association (NMRA) standard allowing spacings between 31.75mm and 32.64mm.
Read more about this topic: O Scale
Famous quotes containing the word standards:
“Barbarism is the absence of standards to which appeal can be made.”
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—Ralph Waldo Emerson (1803–1882)
“That’s the great danger of sectarian opinions, they always accept the formulas of past events as useful for the measurement of future events and they never are, if you have high standards of accuracy.”
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