 | John Fry Heather - 1849 - 202 σελίδες
...E. Connected with the brass boxes are the two points of the instrument G and H, which maybe made to have any extent of opening by sliding the box c along the beam, the other • The survey of the metropolis, now in progress, is to be plotted to a scale of 60 inches to the... | |
 | Thomas Baker - 1850 - 244 σελίδες
...screw E. Connected with the brass boxes are the points of the instrument G and H, which may be made to have any extent of opening by sliding the box C along...the other box B being firmly fixed at one extremity of the beam. The object to be attained by this instrument is the nice adjustment of the points G, H... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 σελίδες
...E. Connected with the brass boxes are the two points of the instrument G and H, which may be made to have any extent of opening by sliding the box C along...this instrument, is the nice adjustment of the points G, H, to any definite distance apart. This is accomplished by two vernier or reading plates b, c, each... | |
 | John Fry Heather - 1851 - 208 σελίδες
...Connected with the brass boxes are the two points of the instrument, G and H, which may be made to have any extent of opening by sliding the box c along...instrument, is the nice, adjustment of the points o, H, to any definite distance apart. This is accomplished by two vernierf or reading plates, b, c,... | |
 | Cyclopaedia - 1852 - 258 σελίδες
...are attaehed to the boxes, and these may be made to have any extent of opening by sliding the box e along the beam, the other box, B, being firmly fixed at one extremity. The niee adjustment of the points G n is attained by means of the two verniers ' It, e, fixed at the side... | |
 | Lucius D. Gould - 1853 - 234 σελίδες
...Connected with the brass boxes are the two points of the instrument o and ir, which may be made to have any extent of opening by sliding the box c, along...B, being firmly fixed at one extremity. The object to1 be attained, in the use of this instrument, is the nice adjustment of the points GH, to any definite... | |
 | W.E. WORTHEN - 1857 - 600 σελίδες
...beam compasses are constructed with a plain beam, with no scale whatever. Two brass boxes, B and 0, are adapted to the beam ; the latter may be moved,...being firmly fixed at one extremity. The object to be attained-in the use of this instrument, is the nice adjustment of the points GH to any definite distance... | |
 | William Ezra Worthen - 1857 - 632 σελίδες
...tightening the clamp screw E. Connected with the brass boxes are the two points of the instrument G and II, which may have any extent of opening by sliding the...this instrument, is the nice adjustment of the points G II to any definite distance apart ; this is accomplished by two vernier or reading plates bc, each... | |
 | Lucius D. Gould - 1857 - 464 σελίδες
...Connected with the brass boxes are the two points of the instrument a and ii, which may be made to have any extent of opening by sliding the box c, along the beum, the other box B, being firmly fixed at one extremity. The object to be attained, in the use of... | |
 | John Fry Heather - 1859 - 198 σελίδες
...Connected with the brass boxes are the two points of the instrument, G and H, which may be made to have any extent of opening by sliding the box c along...this instrument, is the nice adjustment of the points a, H, to any definite distance apart. This is accomplished by two vernierf or reading . plates, b,... | |
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... plotted *. Two brass boxes, B and c, are adapted to the beam ; of which the latter may be moved, by sliding, to any part of its length, and fixed in position by tightening the clamp screw E. Connected with the brass boxes are the two points of the... 
