Train describer (sending)

Block instrument; Great Western/London & North Western Joint Line. Train describer, routeing-sending, 2-needle with LHS-assembly (3-position/2-indication "For Shrewsbury Line/Worcester") and RHS-assembly (3-position/1-indication "Barrs Court/Blank"), underneath which is a peg/chain-arrangement whereby the route can be transmitted. Ex. Shrewsbury and Hereford Joint Line.