The description and use of the carpenters-rule: together with the use of the line of numbers (inscribed thereon) in arithmetick and geometry. And the application thereof to the measuring of superficies and solids, gaging of vessels, military orders, interest and annuities: with tables of reduction, &c. : To which is added, the use of a (portable) geometrical sun-dial, with a nocturnal on the backside, for the exact and ready finding the hour of the day and night: and other mathematical conclusions. Also of a universal-dial for the use of seamen or others. With the use of a sliding or glasiers-rule and Mr. White's rule for solid measure. / Collected and fitted to the meanest capacity by J. Browne.

PROB. 1.

Possibly that this little Book may meet with some that are well skilled in Arithmetick, and being much used to that way, are loth to be weaned from that way, being so artificial and exact, yet though they can multiply & divide very well, yet perhaps they know not this way, to save their di∣vision and yet to take in all the fra∣ctions together as if of one denomina∣tion: I shall begin first with Foot-measure being the more easie, and I suppose my Two-foot-rule to be di∣vided into 200 parts, and figured with 10. 20. 30. 40. 50.60.70. 80. 90. 100. And then so again to 200. as in the 3 Chap. and then the work is on∣ly thus: set down the measure of one side of the square, or oblong thus, as for example, 7. 25, and 9. 88, and multiply them as if they were whole numbers, and from the product cut off 4 figures, and you have the content in Feet, and 1000 parts of a Foot, or Yard, Ell, Perch, or whatsoever else it be. Note the examples following.

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For any kind of flat Superficies, this is sufficient instruction to him that hath read the first part; but if it be Timber, or Stone, you must thus find the Base, and then another work will give you the other side, as in Chapter 5 Problem 2. or, Multiply the length by the Product of the breadth and thickness, and that Pro∣duct shall be the content required.