LIONEL O27 Gauge Track. 1) Ten (10) 8 3/4" straight sections with pins; 2) Three (3) 8 3/4" straight sections without pins; 3) Two (2) 4 3/4" straight sections with pins; 4) Thirty-nine (39) curved sections with pins; 5) Six (6) curved sections without pins; 6) Six (6) half curved sections with pins; 7) 45-degree crossover with pins; 9) 90-degree crossover with pins.
O27 Gauge Track was acquired by Lionel when in 1927 they absorbed Ives Trains. This track’s notable feature was that it has the sharpest curves. Eight sections of curved track describe a circle that is 27 inches in diameter.