 Harrison senior thereupon waited for the £20,000 prize, but the Board were persuaded that the accuracy could have been just luck and demanded another trial.The board were also not convinced that a timekeeper which took six years to construct met the test of practicality required by the Longitude Act.The Harrisons were outraged and demanded their prize, a matter that eventually worked its way to Parliament, which offered £5,000 for the design.