Model train experts needed re: "guage"

[jason1980s]

A friend had some model trains his father collected and he sold to me today since I'm an ebay seller. I've sold these type of trains many times but it's been so long I can't remember the "guage."

The locomotive's are heavy bodied, like a pound or more and the size back to front is 6 inches. They aren't the biggest I've had but not the smallest. They are metal. Most likely from late 1960s.


There are also some tin cars, like Marx style coal type cars made of light tin that are about 4 to 5 inches.

I just need to know what "guage" these are. I know it's not HO and I don't think if N or O (could wrong but one of the guys I sell for a lot has little ones he calls N and O). It's been a while since I sold trains so I can't go back on my sold listings.

I appreciate any and all help I can get! I will say I can not post pictures on here because the pixels are too large though could do them on facebook or hotmail if needed.

[Cranjis McBasketball]

www.trains.com/mrr/videos-photos/videos/beginners/your-guide-to-scales-and-gauges/

[jason1980s]

Ok, thanks. I love real trains and like dealing in the models but will never understand these scales. I don't get how you can have a heavy metal one and a little baby plastic one that are the same scale. It's like LJN and Hasbro, Jakks and Mattel are not one in the same despite being a WWF product. Somehow train scales are one in the same despite being totally different in material and weight. I guess it's the size that matters.