A light to the art of gunnery wherein is laid down the true weight of powder, both for proof and action, of all sorts of great ordnance : also the true ball and allowance for wind, with the most necessary conclusions for the practice of gunnery, either in sea or land-service : likewise the ingredients and making of most necessary fire-works, as also many compositions for the gunner's practice, both at sea and land / by Capt. Thomas Binning ...

CHAP. XVII. The Use of the preceding Tables.

* 1.1IF the Diameter of an Iron Ball be measured with Scots In∣ches, I would know what the same Ball weigheth in Eng∣lish Weight.

Example. There is an Iron Ball, whose Diameter is 5 ½ Scots Inches; I demand what the same Ball weighs in English Weight.

Look in the Table in pag. 80. under B in the fifth Column, where you find 5 ½ Inches; and right against it, in the sixth Column, you have 17 pound and 056/1000 pounds, which is the just weight of the same Ball.

Or otherwise, Look in the Table in pag. 81. under B, in the third Column, where you find 5 ½ Inches; and right against it, in the fourth Column, you have 17 poound, 00 oun∣ces, and 14 drams, which is also the just Weight of the same Ball.

Or if the Diameter of an Iron Ball be measured with Scots Inches; I desire to know what the same Ball weigheth in Scots Weight.

Example. There is an Iron Ball whose Diameter is 6 ⅛ Scots Inches; I demand what doth the same Ball weigh in Scots Weight.

Look in the Table in pag. 78. under B, in the fifth Co∣lumn, where you find 6 ⅛ Inches; and right against it, in the sixth Column, you have 20 pound and 938/1000 parts of a pound, which is the just weight of the same Ball in Scots Weight.

Or otherwise, Look in the Table in pag. 79. under B, in the third Column, where you find 6 ⅛ Inches; and right against it, in the fourth Column, you have 20 pounds and

15 ounces, which is also the just weight of the same Ball in Scots Weight. And this I will assure you to be truth, be∣cause I have calculated all these Tables with my own hand, and they are since revised and truly done, by the laborious pains of Mr. Robert Webster.

Notes

• * 1.1

  Ʋse of the Tables of Iron Ball, measured with Scots Inches.