Broadsheet letterpres with wood block illustrations of General Engineers & Machinists B Fowler & Co, Fleet Street, London. Depicted is Holman's Patent double action pump with prices and specifications. The pump could be used on farms for irrigation, spreading liquid manure and for cespool pumps, and for ships' fire engines. The construction was so well designed that repairs could be done 'by any lad of ordinary intelligence'.
© Science Museum / Science & Society Picture Library