The gauge of an O scale train is 1.25 inches or 1¼ inches. The most popular train sizes are O scale and HO scale – HO stands for “half-O”. Lionel specializes in O scale trains.

He built a massive train set in his Altadena backyard. Tonight's your last chance to see it By Fiona Ng Updated Jan 4, 2025 12:59 AM Published Dec 28, 2024 5:00 AM ...

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Tesla plans to pause production on Cybertruck and Model Y lines for a week at its Austin factory, Business Insider has learned. It would be at least the third such shutdown in a year.

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OpenAI is planning to release its first open-weight language model with reasoning capabilities since GPT‑2 in the coming months, CEO Sam Altman said on Monday.

Russia plans to integrate its homegrown Gigachat artificial intelligence model into IT systems on the International Space Station (ISS), the head of space agency Roscosmos said on Tuesday.