""The Gentleman's, Farmer's and Husbandman's Most Useful Assistant, In Measuring and Expeditiously Computing the Amount of Any Quantity of Land"" is a book written by William Francis and published in 1806. The book is a comprehensive guide to measuring land and computing its area, aimed at gentlemen, farmers, and husbandmen. It covers a wide range of topics, including the use of surveying instruments, the calculation of distances and angles, and the...