 Costs overran and the company delivered the machine in July 1859, several weeks past the deadline, incurring a loss of £615.Despite the engine's printing unit working badly, the Royal Society and the Astronomer Royal were generally positive when they inspected it on 30 August 1859, expressing their satisfaction at its construction.Donkin was unhappy that he had lost so much money on the project, which he attributed to the engine's unexpected intricacy and the fact that he had very little to base his original cost estimate on, Edvard Scheutz having given him very little information.