The Fogg Checkpoint Bridge

厂商原文

Every key stage of the tea routes are marked by the Fogg Bridges, on passing beneath the bridge a bell is rung and the time of the section is logged and relayed back to the Bassett-Lowke factory. Once a complete route is finished all sections are totalled and the fastest train wins the contract. Compatible with OO and HO track and accessories.

厂商发布的英文原文。