Machinists' and Draftsmen's Handbook: Containing Tables, Rules, and Formulas, Intended as a Reference Book for All Interested in Mechanical Work

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Van Nostrand, 1899 - Mechanical engineering - 438 pages
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Page 71 - The exponent of the power to which a fixed number called the Base must be raised in order to produce a given number is called the Logarithm of the given number.
Page 69 - A geometrical progression is a series of numbers, which increase or decrease by a common or constant ratio.
Page 200 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Page 401 - PITCH AND LEAD OF SCREW THREAD. The terms " pitch " and " lead " of screw threads are often confused. The pitch of a screw thread is the distance from the center of one thread to the center of the next thread, whether the screw has a single, double, triple, or quadruple thread.
Page 1 - The fraction, a/b, where the numerator is a and the denominator is b, implies that a is being divided by b. The denominator of a fraction can never be zero since a number divided by zero is not defined.

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