Andrew Mackay

1760 – 1809

• The theory and practice of finding the longitude at sea or land
• The complete navigator
• The complete navigator, or, An easy and familiar guide to the theory and practice of navigation
• The description and use of the sliding rule in the mensuration of wood, stone, bales, &c
• The description and use of the sliding rule, in arithmetic, and in the mensuration of surfaces and solids