The polymeter, or quintant |
From inside the book
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Page vii
... instrument to work with it sufficiently for practical pur- poses , without the help of any other book of Geometry or Trigonometry , and independently of a number of Tables which are necessary with other instruments . This design it is ...
... instrument to work with it sufficiently for practical pur- poses , without the help of any other book of Geometry or Trigonometry , and independently of a number of Tables which are necessary with other instruments . This design it is ...
Page viii
... instrument , the diameter of the ring of the hinge is truly in the face of the mirror . Great care is taken in the manu- facture that this shall be the case . The perpendicularity of the mirror of the Annex will be ascertained by ...
... instrument , the diameter of the ring of the hinge is truly in the face of the mirror . Great care is taken in the manu- facture that this shall be the case . The perpendicularity of the mirror of the Annex will be ascertained by ...
Page ix
... instrument which is opposite the point 90 ° , when the instrument is set so as to observe the angle 0. For various reasons it has been thought better to leave the slighter trouble to the observers than to have such a mark fixed by the ...
... instrument which is opposite the point 90 ° , when the instrument is set so as to observe the angle 0. For various reasons it has been thought better to leave the slighter trouble to the observers than to have such a mark fixed by the ...
Page x
... instrument so modified , it became impossible for the inventor conscientiously to present it to the public for sale , or to officers for use , without apprising them of the fact , and giving to all the opportunity of availing themselves ...
... instrument so modified , it became impossible for the inventor conscientiously to present it to the public for sale , or to officers for use , without apprising them of the fact , and giving to all the opportunity of availing themselves ...
Page xi
... instrument was however complete before these additions ; they are a con- venient addition , just as the repeating works of a Repeater are to the complete works of an ordinary watch . As might be expected , the improved instrument is ...
... instrument was however complete before these additions ; they are a con- venient addition , just as the repeating works of a Repeater are to the complete works of an ordinary watch . As might be expected , the improved instrument is ...
Other editions - View all
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
Popular passages
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