Example: quiz answers
TRACKWORK doing it right - Scenic Express
• NMRA dimensions. The data in the table below are for HO scale based on the standard dimensions in NMRA RP-12.3. Manufacturers of model railroad turnouts sometimes make the lead length shorter and thus the closure radius smaller than these standard dimensions. Turnout Lead Frog Closure Number Length Angle Radius #4 5.06” 14° 15’ 15”
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