Lot 141
ALLEN, Edgar C. Machinery's Screw Thread Book. London: Machinery Publishing Co, Ltd 1940, 8vo, 147pp. Orange card cover with black lettered spine. Fading to spine, some minor rubbing to corners and edges of spine. Pastedown and endpaper with stuck labels "MR. WALLIS' PRIVATE COPY". Initialled to front cover B.N.W.  £80-120