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We are here to promote O scale, 2-rail model railroading and provide a list of resources for the O Scale modeler. Briefly, O Scale is the modeling of trains, structures, and people at the scale of one-quarter inch equals one foot (1/4″= 1′). This scale can also be expressed using a ratio of 1:48.

In comparing this scale to others the following are rough relationships:

O Scale is twice as big as HO and four times as big as N.
S Scale falls about half way in size between O and HO.
G Scale is 1.5 times the size of O

We realize that there are many niches within the 2-rail community. It is not our intent to promote one niche over the other but rather to help you find the one where you receive the most enjoyment and satisfaction. We are here to answer questions, discuss modeling issues and techniques and to organize the 2-rail community to help you find those resources and materials needed to reach your objectives.

Current News

Current News

President’s Message February 2021

PRESIDENT’S MESSAGE, FEBRUARY 2021 To OSK Members and the OS2R Community: My friend Tony Koester is an astute and experienced observer of model railroading. He has dabbled in OS2R and constructed an O Scale module Read more…

Join the O Scale Kings