The gentleman and tradesman's compleat assistant: Or, The whole art of measuring and estimating, made easy. In three parts. Part I. Contains, the names and exact prices of all artificers work in general, relating to building, viz. such as bricklakers, carpenters, joiners, carvers, plaisterers, painters, masons, plumbers, glaziers, slaters, paviours, smiths, &c. Part II. Contains, the method of squaring dimensions, or measuring the said artificers works at large, thro' all their various branches, both by cross multiplication and inspectionary tables, to the extent of an hundred feet square, including tables, which shew the number of squares, square yards, and also the square root of any number of feet, &c. whatsoever required. Part III. Contains geometrical definitions of lines, angles, &c. with the most useful and necessary problems, or the rudiments of practical geometry, mensuration of superficies, &c. To which is added, an appendix, containing a plan and elevation of a house, with the dimensions accurately figured of the true proportioning the several stories, and the members thereto belonging; with a sketch of some very good mouldings, together with several useful tables, viz. The scantling of timber, annuities upon lives, and the purchasing and valuing of freehold and leasehold estates. Likewise, a table shewing how much in length of any board, plank, pane of glass, pavement, or the like, makes a foot square; the breadth thereof being given. The whole made perfectly easy and intelligible to the meanest capacity. Illustrated with copper-plates. By J. Leadbeater, and assistants