## ENGINEERS AND MECHANICS POCKET BOOK |

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### Contents

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### Common terms and phrases

12 inches abscissa angle anthracite coal avoirdupois axis ball base beam bituminous coal body Boilers breadth Cast Iron cent chord circle circumference CM CM CM coal conjugate Copper Cube Root cubic feet cubic foot cubic inches cylinder decimals deflexion denominator depth of hold Diam difference dimensions distance divide draught engine equal Example.—The Example.—What feet in length feet per second find the Area find the Solidity flues fluid force fraction frustrum grains half the arc heat hour inches diameter inches in diameter miles minute multiply pendulum perpendicular Pine pipe plane pounds pressure proportion quotient radius revolutions revolving Rule Rule.—Divide Rule.—Multiply segment shaft side Smoke Pipes specific gravity spindle square feet square inch square root steam stroke of piston subtract surface Table—(Continued temperature thickness tons transverse triangle velocity versed sine vessel VULGAR FRACTIONS Water Wheels weight Wrought Iron yards

### Popular passages

Page 47 - The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc.

Page 48 - Similar figures, are those that have all the angles of the one equal to all the angles of the other, each to each, and the sides about the equal angles proportional.

Page 24 - To reduce a whole number to an equivalent fraction, having a given denominator. RULE. Multiply the whole number by the given denominator, and place the product over the said denominator, and it will form the fraction required.

Page 15 - Capacity. 4 gills = 1 pint. 2 pints = 1 quart. 4 quarts = 1 gallon. 2 gallons = 1 peck. 4 pecks = 1 bushel. 8 bushels = 1 quarter. Time. 60 seconds 60 minutes 24 hours 7 days 365 days minute. hour. day. week, year. Solidity. 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard. Apothecaries

Page 37 - Fellowship is when different stocks are employed for any certain equal time. RULE.* — As the whole stock is to the whole gain or loss, so is each man's particular stock to his particular share of the gain or loss.t PROOF. — Add all the shares together, and the sum will be equal to the gain or loss, when the work is right.

Page 81 - Take the length of the keel within board (so much as she treads on the ground) and the breadth within board by the midship beam, from plank to plank, and half the breadth for the depth, then multiply the length by the breadth, and that product by the depth, and divide the whole by 94; the quotient will give the true contents of the tonnage.

Page 28 - ... from the right hand of the quotient, point off so many places for decimals, as the decimal places in the dividend exceed those in the divisor.

Page 188 - Now the distance of the centre of oscillation from the point of suspension...

Page 24 - To reduce a mixed number to an improper fraction. RULE. — Multiply the whole number by the denominator of...

Page 204 - ... above the upper deck"; the breadth thereof at the broadest part above the main wales, half of which breadth shall be accounted the depth of such vessel, and then deduct from the...