Reviews : Ribbonrail 5'' Track Alignment Gauges Curved 18'' Radius Ribbonrail 5'' Track Alignment Gauges Curved 18'' Radius $4.19 Leave a Rating! ★ ★ ★ ★ ★ OR Write a Review! Write a Review Sort 5-Star: 1 (1 ratings) 4-Star: 0 (0 ratings) 3-Star: 0 (0 ratings) 2-Star: 0 (0 ratings) 1-Star: 0 (0 ratings) Reviews Great for aligning flex track By: ejjones2 The Ribbon Rail alignment gauges work really well with the Atlas code 80 flex track. They have made it so much easier pinning down the track when laying out curves. (0)