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CHAPTER X.

Various Forms of Planimeters and their Characteristics.

Coradi's Mechanical Integraph.


No. 10.

Although lack of space prevents even the enumeration of many very valuable forms of instrument which from the nature of their theory and operation would be included in the Planimeter class we have been discussing, enough has been said to give some idea of their practical value and of the almost indispensable aid of which they are capable in almost every form of Engineering calculation.

That the value of these instruments is becoming slowly recognized is true, but the slowness of the recognition can only be accounted for by a lack of knowledge of the instruments and of their invaluable characteristics. With this knowledge and by the acceptance of the aid furnished by these instruments in almost every detail of Engineering labor, the work of the Engineer regardless of its nature will be relieved of by far the greatest share of its present attendant drudgery.

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