PENDULUM METHODS 



171 



X is scaled direct from the diagram using the center as zero 



10A;C 

 and having the indexes at the divisions ± — . — and placing 



it so that these indexes coincide with the lines y'y', y"y" 

 (Fig. 110). 1 



Fig. 110. 



-Actual diagram made by teleclinograph showing method of measuring 

 deviation by coordinates. 



There is a special orientating coupling which allows the 

 rods to follow the hole curvature but maintain their surface 

 orientation.^ Figure 111 is a survey by the teleclinograph 

 checked from shaft records later. It was taken in the No. 

 8 borehole of the Steaua Romana No. 17 suite of shaft holes 

 and well illustrates the plan wanderings of a hole. It was 

 surveyed in 1925 and is discussed by Friedenreich.^ 



Kinley's Inclinometer. — This instrument, invented by 

 M. M. Kinley, the oil-field fire fighter of Tulsa, Oklahoma, 



1 After Adam, D., loc. cit., p. 412. See also Schmidt, F., Trans. Inst. Min. 

 Eng., Vol. 52, p. 178. 



Friedenreich, O. L., Analele Minelor din Romania, p. 693, November 

 1926. 



* FORAKY, op. cit., p. 82. 



3 Ibid., p. 707. 



