I reciently purchased some Ross o72 sectional track to replace an old loop of o72 tubular track.The Ross track is well made and very realistic but when laying out the track it seems at least three inches larger in diameter than the tubular track.I checked the Ross technical drawing and the Ross track measures up to their drawing.I can see different manufactures track being slightly off of their stated dementsions but not three inches.I also have some Gargraves curved o72 that is also a different dementsion than the tubular or Ross. Isn't there any standard in o gauge track ?
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