Just heard that Ribbonrail will introduce 10 inch long, 38/40/42 inch radius alignment gauges. First are expected to become available next week. The 10 inch versions make it much easier to establish smooth curves with flex track than the original 5 inch models. The 5 inch units work well in combination with the 10 inch units in forming easements. I know not everyone uses broad curves but many of the newer Bachmann On30 engines look much better on them. I wish Ribbonrail success in expanding their line to suit our needs.