Mathematical Instruments: Their Construction, Adjustment, Testing and Use : Comprising Drawing, Measuring, Optical, Surveying, and Astronomical InstrumentsCrosby, Lockwood and Company, 1884 - 159 pages |
From inside the book
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Page i
... PLANE GEOMETRY , DESCRIPTIVE GEOMETRY , " ETC. 99 66 ENLARGED EDITION , FOR THE MOST PART ENTIRELY RE - WRITTEN With Numerous Ellustrations Capio umen LONDON CROSBY LOCKWOOD AND CO . 7 , STATIONERS ' HALL COURT , LUDGATE HILL 1884 323+ ...
... PLANE GEOMETRY , DESCRIPTIVE GEOMETRY , " ETC. 99 66 ENLARGED EDITION , FOR THE MOST PART ENTIRELY RE - WRITTEN With Numerous Ellustrations Capio umen LONDON CROSBY LOCKWOOD AND CO . 7 , STATIONERS ' HALL COURT , LUDGATE HILL 1884 323+ ...
Page 2
... plane to receive the drawing . TABLE OF DIMENSIONS OF DRAWING PAPER . 35 in . by 23 in . Demy Medium • • 20 in . by 15 in . • • 22 39 17 , Columbier Atlas 34 2 € " " Royal 24 • " " 19 , 19 " Imperial 30 22 99 " " Dbl . Elephant ...
... plane to receive the drawing . TABLE OF DIMENSIONS OF DRAWING PAPER . 35 in . by 23 in . Demy Medium • • 20 in . by 15 in . • • 22 39 17 , Columbier Atlas 34 2 € " " Royal 24 • " " 19 , 19 " Imperial 30 22 99 " " Dbl . Elephant ...
Page 5
... plane , we lay a rule so that the straight edge thereof may just pass by the two points ; then moving a fine - pointed needle , or drawing - pen , along this edge , we draw a line from one point to the other , which , for common ...
... plane , we lay a rule so that the straight edge thereof may just pass by the two points ; then moving a fine - pointed needle , or drawing - pen , along this edge , we draw a line from one point to the other , which , for common ...
Page 8
... plane of the picture , upon which they are to be represented , must be so drawn as to meet in a point , which is denominated the vanishing point . This point is generally so distant as to require a very long straight - edge and drawing ...
... plane of the picture , upon which they are to be represented , must be so drawn as to meet in a point , which is denominated the vanishing point . This point is generally so distant as to require a very long straight - edge and drawing ...
Page 25
... plane scale of six inches in length . In one , the distances between the primary divisions are each half an inch , and in the other a quarter of an inch . The parallel next to the figures numbering these divi- sions must be considered ...
... plane scale of six inches in length . In one , the distances between the primary divisions are each half an inch , and in the other a quarter of an inch . The parallel next to the figures numbering these divi- sions must be considered ...
Common terms and phrases
adjustment altitude axis barometer beam compasses bisected centre chords chromatic dispersion circle clamp cloth coincident collimation compasses construction cross wires D line decimal point described diameter difference distinct vision divided divisor drawing Dumpy level edge Edition ENGINEERING equal extent will reach eye-piece feet focal length gauge point given number glass groove horizontal inches instru instrument integral figures integral places latitude lens lenses light limb line of sines logarithmic marked means measured ment mercury meridian microscope mirror number of integral object object-glass object-piece observed parallax parallel plate pencil plane position primary divisions prism produced proportional protractor radius rays reading reflected reflector represent right angles right ascension round rule scale screw side slide slide-rule spherical aberration spirit level station straight edge surface taken tangents telescope term theodolite tion transverse distance triangle tube turned vernier vertical zero
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