A page from The English Life Table, 1864.
© Science Museum / Science & Society Picture Library
These tables were calculated by the Scheutz Difference Engine No3 bought by the General Register Office for £1200. Father and son, George and Edvard Scheutz, built an engine which was a means of eliminating errors of calculation, transcription and printing, by producing multiple copies when printing log tables. The numbers were impresed onto papier mache or metal strips. These were then used as moulds from which multiple copies of the results could be printed.