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The plate-Glass-Book, consisting of the following authentic tables: I. The glass-house table; shewing the Value of the Rough-Plate, with the additional Sums for Duties, Risk, and Profit. II. The Value of any Looking-Glass finished, including the Grinding, Polishing, and Silvering, with the 30 per Cent. which is usually charged by the Glass-Grinder for his Hazard and Profit. III. The Prices of Grinding, Polishing, Silvering, and Diamond-Cutting the several Marks or Sizes. IV. The Value of a Looking Glass when accidentally Broken or designedly Divided. V. Shewing the marks of plate-glass, Ground, Polished, Silvered, and Diamond-Cut; with the Workmen's Table, whether the Glass be Diamond-Cut or not. To which is prefixed, an explanation of the tables: And a Preface, demonstrating the Fallibility and Incorrectness of all written Tables and wooden Rules, for the valuing of Plate-Glass. With Some Observations concerning the Nature and Antiquity of Glass in general. Of Plate or Looking-Glass; Of the Ingredients of which it is made, and the Time it requires for founding; Of the Manner of grinding, polishing, and silvering it. Also of the different Colours of Plate-Glass; and at what Rate the several Hazards attending the working, silvering, framing, and packing of it ought to be estimated. Also of Mirrors, both Concave and Convex. By a glass-house clerk. A new edition, corrected. To which is added, The compleat appraiser, Consisting of Ninety-Odd Tables, with Instructions for valuing of Kitchen and Household Furniture, &c. &c.