Tyers No 6 Single Line Tablet ROSE STREET - CLACHNAHARRY No 30 (configuration 'special'). Ex Highland Railway between Inverness and the Far North of Scotland and Kyle of Lochalsh. The special configuration is probably the result of the original existence of an intermediate siding for the Muirton Basin Branch. This had an intermediate tablet instrument to enable trains to be 'shut in' whilst at the same time , special locking existed for the Swing Bridge over the Caledonian Canal at Clachnaharry. The Clachnaharry Signal Box closed as part of block post on 21st August 1988. Steel and brass construction, excellent condition.