North Eastern Railway brass Drawing Office Roller manufactured by Halden & Co., Manchester & London. A wonderful item, script engraved with the makers name on the upper part and 'Engineers Office, N.E.R York' on the lower part. Basically a 24 x 3 ungraduated rule with a knurled knob either end to grip whilst moving up and down the drawing board.A pair of 'wheels' assist gliding across the surface of plans etc. Excellent condition and very similar to the Glasgow & South Western Railway example we sold several auctions ago.