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• 2013-02-15 07:10 Centpacrr 1137×687× (891602 bytes) Add 5" with arrows to illustration showing height of superelevation.
• 2013-02-15 04:47 Centpacrr 1137×687× (630103 bytes) Railroad track spirit level in place indicating 5" of superelevation between the inside and outside rail of a curve along the [[Keystone Corridor]] near Narberth, PA. <small>1850's vintage track spirit level from the ''Cooper Collection of Americ...