COMPLETE MEASURER: OR, THE WHOLE ART OF MEASURING. BEING A PLAIN AND COMPREHENSIVE TREATISE ON PRACTICAL GEOMETRY AND MENSURATION. CONTAINING The Substance of HAWNEY'S MENSURATION, newly ADAPTED TO THE USE OF SCHOOLS, AND PERSONS CON- BY THOMAS KEITH. London: PRINTED FOR F. C. AND J. RIVINGTON, W. LOWNDES, By R. & R. Gilbert, St. John's Square, Clerkenwell. COMPLETE MEASURER: OR, THE WHOLE ART OF MEASURING. BEING A PLAIN AND COMPREHENSIVE TREATISE ON PRACTICAL GEOMETRY AND MENSURATION. CONTAINING 1 The Substance of HAWNEY'S MENSURATION, newly arranged, adapted to the present improved State of Science, and incorporated with a Variety of original and important Matter. ADAPTED TO THE USE OF SCHOOLS, AND PERSONS CONCERNED IN MEASURING, GAUGING, SURVEYING, &c. BY THOMAS KEITH. London: PRINTED FOR F. C. AND J. RIVINGTON, W. LOWNDES, G. WILKIE, SCATCHERD AND LETTERMAN, J. TAYLOR, LONGMAN AND CO., T. BOOSEY, LACKINGTON AND CO., R. S. KIRBY, J. MAWMAN, SHERWOOD AND CO., LAW AND WHITTAKER, BALDWIN AND CO., G. AND S. ROBINSON, AND WALKER AND EDWARDS. By R. & R. Gilbert, St. John's Square, Clerkenwell. IN the year 1798, the Proprietors of HAWNEY'S Mensuration applied to the Editor to superintend a new edition of that Work, and to make such alterations and additions as would render it useful in schools, without deviating much from the original plan. The work at that time did not contain any PRAC TICAL GEOMETRY, notwithstanding its evident utility; many of the rules were erroneous and defective, and there was only one example given to each rule, and that worked at full length. The paucity of examples excluded the book from our modern schools; the Editor therefore added upwards of three hundred: also an extensive chapter of Practical Geometry, and corrected all the rules. In subsequent editions, several new rules were added, likewise the description and use of the Carpenters Rule, and of the Sliding Rule: the other different articles were, many of them, extended. This edition has been entirely re-written, excepting those parts which the Editor had previously introduced into the work; and only seven of the old wood-cuts are retained: the rest, amounting to one hundred and fifty-three, are new; so that few traces of the original work are left. So great a deviation from the sixteenth edition, and those which preceded it, will perhaps appear unwarrantable to persons unacquainted with the work; but, if the Editor can secure the approbation of experienced teachers and mathematicians, his time will not have been miscmployed, and any apology for the alterations and additions will be unnecessary. The twentieth, and the fourth, superintended by the Editor. |