The polymeter, or quintant |
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Page vi
... Rules for knowing Distances THE PLUMB PAGE 32 ib . · 33 • 34 • 35 37 ib . and 46 40 41 43 49 . 50 • 54 55 ib . 56 58 59 ib . THERMOMETER 62 ADVERTISEMENT . THE following remarks have been written and printed vi CONTENTS .
... Rules for knowing Distances THE PLUMB PAGE 32 ib . · 33 • 34 • 35 37 ib . and 46 40 41 43 49 . 50 • 54 55 ib . 56 58 59 ib . THERMOMETER 62 ADVERTISEMENT . THE following remarks have been written and printed vi CONTENTS .
Page 1
... rule ; and , when opened out from each other to their fullest expansion , a twelve - inch or foot rule . The ordinary Sector , besides various Trigonometrical Lines graduated on its two legs , has a graduation commonly called the Line ...
... rule ; and , when opened out from each other to their fullest expansion , a twelve - inch or foot rule . The ordinary Sector , besides various Trigonometrical Lines graduated on its two legs , has a graduation commonly called the Line ...
Page 4
... rule . Supposing for example that the diameter required be found to fall somewhere between 3 and 4 , as shewn by the ... rule will be equally applicable , whether the 1 N.B. The truth of this rule depends upon the property of similar ...
... rule . Supposing for example that the diameter required be found to fall somewhere between 3 and 4 , as shewn by the ... rule will be equally applicable , whether the 1 N.B. The truth of this rule depends upon the property of similar ...
Page 5
... rule must be fully expanded to a straight line , which will then be 12 inches long , and the Square slid out , as before , until the internal length be realized . III . THE PROTRACTOR . The instrument for its next simple use may be ...
... rule must be fully expanded to a straight line , which will then be 12 inches long , and the Square slid out , as before , until the internal length be realized . III . THE PROTRACTOR . The instrument for its next simple use may be ...
Page 23
... rule , that when the Quintant is furnished with an Annex , with the help of which it takes all angles up to 180 ° , angles are taken much more rapidly , as well as with greater accuracy , than bearings with the always unsteady compass ...
... rule , that when the Quintant is furnished with an Annex , with the help of which it takes all angles up to 180 ° , angles are taken much more rapidly , as well as with greater accuracy , than bearings with the always unsteady compass ...
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Common terms and phrases
angle of elevation angle required Annex Artificial Horizon base centre circle Clinometer Compass-leg Conic Sections constructed Crown 8vo diameter Differential Calculus dimensions distance division draughtsman English Mile English Yards engraved equivalent number Friedrichs d'or German given angle given side given to find graduated disc half-arrow hinge-joint hypotenuse inches inner edges joint length Line of Lines lower leg magnetic bearing Marquois Scales measure ment Meridian metal Square metre Millimetres Mirror number of yards observed Open the instrument Open the Sector opposite leg outer edge parallel Parallel Ruler perpendicular plane Polymeter Proportional Compasses Protractor quadrant Quintant radius required angle required triangle right angle right-angled triangle ruler Russian Werst scale of equal secant lines Second Edition Sector's legs set of graduations Sextant shadow sight-vane Sine sion slided Spirit-Level stands tenuse third angle Third Edition third side Treatise Trigonometer University of Cambridge Vernier Scale
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