Block instrument with spagnoletti flag indicator (incomplete); GWR. Tyer's style, but wider: absolute 2-vane Down/Up Line (minus Down-Line Vane-assembly) pegging/non-pegging 2-position/2-indication with circular bakelite-commutator. Above the commutator is a rectangular 'state of line' window. Instrument is unusual in 2 respects: such absolute instruments were usually made by Spagnoletti, and the front face of the commutator is marked with the line-descriptions appropriate to the window-indication.