The gvnners glasse. VVherein the diligent practicioner may see his defects, and may from point to point reforme and amend all errours that are commonly incident to unskilfull gunners. Set forth by way of a dialogue: betweene an experienced gunner and a scholler, with tables of randons. Approved by the authors own practice, with certain easie wayes and rules for taking of distances: never before this time published. Whereunto is annexed part of the excellent worke, published in Spanish by Diago Uffano, containing a dialogue between an experienced captaine, and a new generall of the artillery. Shewing the office and duty of all officers belonging to the traine of the artillery, with the manner of batteries and sieges, and many other things now discovered for the benefit and good of the Common-wealth. /