Circuit S – Slot Car Racing From Meccano Posted on May 9, 2015 by The Vintage Toy Advertiser Reply Circuit S was a slot-car racing set powered by hand controllers that worked in the same way as the famous brand Scalextric. Circuit S was produced by the Meccano company and featured Formula 1, Prototype and GT sets. France. Pif Gadget. 1979. Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading...