 | James Wylson - Mechanical engineering - 1859 - 116 pages
...setting instrument, — legs forming, it may be, unequal angles with blade. At either end of dotted line crossing central, a pin is inserted vertically for...intersect — even temporarily, for the purpose of setting tho instrument as shown, a corresponding convergence may be found between them by drawing a line parallel... | |
 | Spon E. & F.N., ltd - 1869 - 402 pages
...setting instruments, legs forming it may form unequal angles with blade. At either end of dotted line crossing central, a pin is inserted vertically for...by drawing a line parallel to and inward from each. Fig. 5703. Proportional compasses used in copying drawings on a given larger or smaller scale. The... | |
 | Henry T. Brown - Mechanical movements - 1871 - 168 pages
...setting instrument, legs forming it may form unequal angles with blade. At either end of dotted line crossing central, a pin is inserted vertically for...Proportional compasses used in copying drawings on a jiven larger or smaller scale. The pivot of compasses Is secured in a slide which is adjustable in... | |
 | Edward Spon - Engineering - 1873 - 398 pages
...setting instruments, legs forming it may form unequal angles with blade. At either end of dotted line crossing central, a pin is inserted vertically for...convergence may be found between them by drawing a lino parallel to and inward from each. Fig. 5763. Proportional compasses used in copying drawings on... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - Engineering - 1874 - 396 pages
...setting instruments, legs forming it may form unequal angles with blade. At cither end of dotted line crossing central, a pin is inserted vertically for...temporarily, for the purpose of setting the instrument as shewn, a corresponding convergence may bo found between them by drawing a line parallel to and inward... | |
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Upper or drawing edge of blade and back of movable legs should intersect center of joint. Geometrical diagram indicates mode of setting instrument, legs forming it may form unequal angles with blade. At either end of dotted line crossing central, a pin... 