Layout at a Glance
Name: PRR Middle DivisionScale: HO (1:87)
Size: 20' x 15' Plus two adjoining closets
Prototype: PRR
Locale: Altoona to lines West
Era: Steam-Diesel Transition
Style: Single Deck with Large Peninsula
Mainline run: 120 feet (visible)
Minimum radius: 24"
Minimum turnout: no. 8 on most of mainline trackage, no. 6 on industrial tracks.
Maximum grade: 2% at the Horseshoe Curve