HO scale

== English == === Etymology === From half + O scale. === Noun === HO scale (uncountable) (US, Australia) A popular scale for model railroads; 1:87 scale ==== Synonyms ==== (1:87 scale): HO, H0, HO gauge ==== Coordinate terms ==== O scale N scale ==== See also ==== H0 scale on Wikipedia.Wikipedia Rail transport modelling scales on Wikipedia.Wikipedia === Anagrams === Solache, loaches, scholae, sea loch