Heath Consultants Aqua-Scop - Manual (Page 31)

By the numerical technique the distance from test point A to the leak is:
XA =
(
.9
)
x 70 Yards = 52.5 Yards
.9 + .3
Similarly:
XB =
(
.3
)
x 70 Yards = 17.5 Yards
.9 + .3
(Figure 16)
The graphical as well as the numerical solution are only preliminary
determinations. The ideal case of two equal contact measurements
is so remote, that a check with the Ground Microphone is always
recommended.
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