Scale and space

What fits on your baseboard, per scale and size.

• The tightest curve radius in N and what it means for your baseboard (8 November 2026)
  In N the tightest curve starts at 192 mm, enough for a loop about 40 cm wide. Smallest radius per system, the turnouts and what long coaches make of it.
• A TT layout on 140 x 70 cm: what fits? (6 November 2026)
  On 140 x 70 cm a TT layout takes an oval on the tightest curve with a passing loop, sidings or a two-platform station. A passing loop fits from 120 cm.
• An N layout on 100 x 50 cm: what fits? (3 November 2026)
  On 100 x 50 cm an N layout takes a loop with a passing loop, but only with the tightest systems and a narrow margin. Measured per track system.
• An H0 layout on 240 x 120 cm: what fits? (1 November 2026)
  On 240 x 120 cm an H0 layout takes double track all round or a station with a yard, with 9 to 13 m of track. Measured per track system with the designer.
• An H0 layout on 180 x 90 cm: what fits? (29 October 2026)
  On 180 x 90 cm, H0 and OO give you one loop on the smallest radius, with sidings and, for most systems, a passing loop. Measured per track system.