Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
From inside the book
Results 1-5 of 12
Page 56
... screw enters the inner one , and presses a washer against the other , and the base of the ball . On the upper surface of the plate FG , rests a clamp which goes round the outer spindle , and which being compressed by the clamp- screw K ...
... screw enters the inner one , and presses a washer against the other , and the base of the ball . On the upper surface of the plate FG , rests a clamp which goes round the outer spindle , and which being compressed by the clamp- screw K ...
Page 57
... clamp - screw S ; after which the smaller motions are made by the tangent - screw T. There is a compass on the vernier plate , that is concentric with it , the use of which will be explained under the head compass . The frame - work ...
... clamp - screw S ; after which the smaller motions are made by the tangent - screw T. There is a compass on the vernier plate , that is concentric with it , the use of which will be explained under the head compass . The frame - work ...
Page 58
... clamp - screw S of the vernier plate , and direct the telescope to a small , well- defined , and distant object . By means of a small pin i , on the under side of the telescope , slide the eyeglass till the spider's lines are seen ...
... clamp - screw S of the vernier plate , and direct the telescope to a small , well- defined , and distant object . By means of a small pin i , on the under side of the telescope , slide the eyeglass till the spider's lines are seen ...
Page 64
... clamp - screw K , and by means of the tangent screws L and 7 , bring the intersection of the spider's lines to coincide exactly with the object . Having loosened the clamp - screw Q of the lower telescope MN , direct it with the thumb - ...
... clamp - screw K , and by means of the tangent screws L and 7 , bring the intersection of the spider's lines to coincide exactly with the object . Having loosened the clamp - screw Q of the lower telescope MN , direct it with the thumb - ...
Page 133
... clamp - screw , similar to the clamp - screw of the theodolite , which being loosened , the table can be turned freely about its axis . There is , also , a small tangent - screw , by which the smaller motions of the table are regulated ...
... clamp - screw , similar to the clamp - screw of the theodolite , which being loosened , the table can be turned freely about its axis . There is , also , a small tangent - screw , by which the smaller motions of the table are regulated ...
Other editions - View all
Common terms and phrases
adjusted angle of elevation axis azimuth back-sights base line called centre clamp-screw coincide column comp compass Cosine D Cosine Sine Cotang course curve degrees determined difference of level direction divided double meridian distance draw east elongation error example feet field notes figure given angle given line given point ground Gunter's chain hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection LatDegDegDegDeg Distance latitude and departure length levelling screws line AC line of collimation logarithm M.
M. Sine marked measure method multiplied natural sines needle object paper parallel passing perpendicular plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side sights similar triangles Sine Sine spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards