William Roy

1726 – 1790

• An account of the trigonometrical operation, wherby the distance between the meridians of the observatories of Greenwich and Paris has been determined
• Comparison between Sir George Shuckburgh and Colonel Roy's rules for the measurement of heights with the barometer
• Experiments and observations made in Britain
• Experiments and observations made in Britain, in order to obtain a rule for measuring heights with the barometer
• The great map
• The military antiquities of the Romans in Britain