Valid to UK only - excludes oversized items
Based on the principle of a closed-loop, the smallest effective baseboard size for N Gauge is a baseboard of 20 inches (508mm) square. This measurement is based on track components of No.1 Radius (228 mm or 9") which is the tightest curve available in N Gauge.
A measurement of 20 inches per side will ensure that the entire track will be on the baseboard without any overhang.
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