Pocket book of useful formulæ & memoranda for carpenters, Royal navy

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Page 92 - Weigh the denser body and the compound mass, separately, both in water and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then say, As the last remainder, Is to the weight of the light body in air, So is the specific gravity of water, To the specific gravity of the body.
Page 46 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 45 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
Page 39 - ... add together the upper and lower breadths at the foremost division, three times the upper breadth and the lower breadth at the midship division, and the...
Page 39 - ... in feet and decimal parts of a foot from the foremost to the aftermost bulkhead, then multiply the said length by the depth of the ship or vessel at the midship division as aforesaid, and the product by the inside breadth at the same division at twofifths of the depth from the deck, taken as aforesaid, and divide the last product by 92-4, and the quotient shall be deemed the tonnage due to the cubical contents of the engine-room.
Page 46 - APOTHECARIES' WEIGHT. 20 Grains = 1 Scruple 3 Scruples = 1 Drachm 8 Drachms = 1 Ounce 12 Ounces = 1 Pound APOTHECARIES
Page 39 - ... of the upper deck to the ceiling at the limber strake. In the case of a break in the upper deck, the depths are to be measured from a line stretched in a continuation of the deck. Breadths : divide each of...
Page 39 - Then to twice the midship depth add the foremost and the aftermost depths, for the sum of the depths. ' Add together the upper and lower breadths at the foremost division, three times the upper breadth and the lower breadth at the midship division...
Page 81 - To find the solidity of a cube or right prism. Rule. — Multiply the area of the base by the perpendicular height, and the product will be the solid contents.
Page 91 - When the body is heavier than water, weigh it both in water and out of water, and take the difference, which will be the weight lost in water. Then say, As the weight lost in water, Is to the whole weight.

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