
1) Measuring device 2) Measuring instrument 3) Measuring system 4) Planimeter
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https://www.crosswordclues.com/clue/integrator

1) Planimeter
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https://www.crosswordclues.com/clue/integrator

An integrator is a device to perform the mathematical operation known as integration, a fundamental operation in calculus. The integration function is often part of engineering and scientific calculations. Mechanical integrators are used in such applications as metering of water flow or electric power. Electronic analog integrators were the basis ...
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http://en.wikipedia.org/wiki/Integrator

• (n.) That which integrates; esp., an instrument by means of which the area of a figure can be measured directly, or its moment of inertia, or statical moment, etc., be determined.
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http://thinkexist.com/dictionary/meaning/integrator/

instrument for performing the mathematical operation of integration, important for the solution of differential and integral equations and the ...
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http://www.britannica.com/eb/a-z/i/27

a device for producing an output quantity proportional to the time integral of the input quantity
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=702-09-34

A non-common-carrier freight service controlled by a published timetable and operating to a network of stations exclusively to its own benefit and providing liveried vehicles and staff to manage the entire transport of the consignment.
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http://www.encyclo.co.uk/visitor-contributions.php
In'te·gra`tor noun (Math. & Mech.) That which integrates; esp., an instrument by means of which the area of a figure can be measured directly, or its moment of inertia, or statical moment, etc., be determined.
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http://www.encyclo.co.uk/webster/I/74

[
n] - a measuring instrument for measuring the area of an irregular plane figure
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http://www.webdictionary.co.uk/definition.php?query=integrator
planimeter noun a measuring instrument for measuring the area of an irregular plane figure
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https://www.encyclo.co.uk/local/20974

a person or thing that integrates. · Also calledan instrument for performing numerical integrations.
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https://www.infoplease.com/dictionary/integrator
No exact match found.