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1902 model 12-run seed drill Modern air seeder and hoe drill combination. The invention of the seed drill dramatically improved germination. The seed drill employed a series of runners spaced at the same distance as the plowed furrows. These runners, or drills, opened the furrow to a uniform depth before the seed was dropped.
A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide (CO 2) stored in small cylinders allowing for portability. [1] Most pneumatic tools convert the compressed air to work using a ...
Upload file; Search. Search. ... Download as PDF; ... Wikidata item; Appearance. move to sidebar hide. A pneumatic drill may refer to a: Jackhammer ...
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