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" ... steel. The difference in the texture and pores of the two metals causes the parts to adhere less together, diminishes the wear, and promotes uniformity in their motion. The truth of the work is ascertained by the smoothness and equality of the motion... "
Geometrical and Graphical Essays: Containing a General Description of the ... - Pàgina 14
per George Adams - 1813 - 534 pàgines
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1811 - 580 pàgines
...diminishes the wear, and promotes uniformityintheir motion The truth of the work is ascertained by t lie smoothness and equality of the motion at the joint,...and yet meeting closely when the compasses are shut. As an instrument of art, compasses are so well know, that it would be superlluous to enumerate the...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1814 - 558 pàgines
...diminishes the wear, and promotes uniformity in their motion. The truth of the work is as^ certained by the smoothness and equality of the motion at the...tempered, as neither to be easily bent or blunted ; hot too fine and tapering, and yet meeting closely when the compasses are shut. As an instrument...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1821 - 594 pàgines
...shortest ones, while, at the .same time, they are better adapted to large work. OF DRAWING COMPA88E8. Compasses are made either of silver or brass, but...and yet meeting closely when the compasses are shut. As an instrument of art, compasses are so well known that it would be superfluous to enumerate the...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1832 - 290 pàgines
...shortest ones, while, at the same time, they are better adapted to large works. OF DRAWING COMPASSES. Compasses are made either of silver or brass, but...and yet meeting closely when the compasses are shut. As an instrument of art, compasses are so well known that it would be superfluous to enumerate their...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1833 - 436 pàgines
...smoothness and equality of the motion at the joint, for all shake and irregularity vis a certaintsign of imperfection. The points should be of steel, so...and yet meeting closely when the compasses are shut. As an instrument of art, compasses are so well known that it would be superfluous to enumerate then-...
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The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson, James Ryan - 1839 - 452 pàgines
...less together, diminishes the wear, and promotes uniformity in thehkmotion. The truth of the worlc is ascertained by the smoothness and equality of the...points should be of steel, so tempered as neither to he easily bent or blunted; not too fine and tapering, and yet mooting closely whrn the compasses arc...
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A treatise on the principal mathematical drawing instruments employed by the ...

Frederick Walter Simms - 1845 - 184 pàgines
...27). This is shewn at a in the engraving on the adjoining page 3. The points of a well made instrument should be of steel so tempered, as neither to be easily...and yet meeting closely when the compasses are shut. As some of the numerous uses to which this instrument may be applied, the following may be mentioned....
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Pike's Illustrated Descriptive Catalogue of Optical, Mathematical, and ...

Benjamin Pike - 1848 - 356 pàgines
...diminishes the wear and promotes uniformity in their motion ; all shake and irregularity at the joint is a sign of imperfection. The points should be of steel, so tempered as neither to be easily bent nor broken ; fine and tapering, and meeting closely when shut. Plain compasses are used to measure...
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Pike's Illustrated Descriptive Catalogue of Optical, Mathematical and ...

Benjamin Pike (Jr.) - 1848 - 482 pàgines
...diminishes the wear and promotes uniformity in their motion ; all shake and irregularity at the joint is a sign of imperfection. The points should be of steel, so tempered as neither to be easily bent nor broken ; fine and tapering, and meeting closely when shut. Plain compasses are used to measure...
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APPLETONS' CYCLOPAEDIA OF DRAWING

W.E. WORTHEN - 1857 - 600 pàgines
...drilled two small holes for the application of a key (fig. 43). The points of a well made instrument should be of steel so tempered, as neither to be easily...and yet meeting closely when the compasses are shut. is taken, it may suffer no disturbance in its transfer from the scale to the drawing. In order to this,...
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