 The signal box retains most of its original equipment and is an excellent example of a traditional early 1900s elevated timber railway signal box, sympathetically adapted to operate electric light signals and power activated points mechanisms.It is now one of the largest signal boxes remaining from a relatively small sub-group of standard railway building types.Located close to Eskbank railway station, the signal box is an important part of the larger historic Lithgow railway corridor controlling access to and from Eskbank locomotive depot, local colliery branch lines as well as locomotives using the nearby 1888 on-line overhead coaling bunker.