Laying Out A Swimming Pool - David White L6-20N Owner's Manual

To lay out an angle, proceed in the same way as in measuring an
angle. Set the instrument at station 1, level it, and set the circle at
zero. Swing the telescope to the desired angle and move the rod
to intersect the vertical cross hairs. This establishes your angle.
NOTE: The L6-20N and LT6-900N have horizontal verniers which
read to 15 minutes (1/4 degree). For projects which need more
accurate angle measurement for layout, we recommend using a
more precise instrument with a 5 minute vernier.

Laying out a swimming pool

D
C
A B
E F
H
G
In the above figure, A-B is the lot line. The corner of the proposed
swimming pool is E. Point C is the point where the line forming the
side of the pool intersects this lot line. If E has not already been
determined, set up and level the instrument directly over point C
and line up the cross hairs on B. Set horizontal circle to zero. Turn
the telescope 90 degrees to the right.
The vertical cross hair of the instrument will now cut across point
E and point G. Measure the distance from the lot line to the corner
of the pool, which is C-E. Also, the distance E-G is measured
along this line. Place a stake at points C, E and G.
Next set up and level the instrument directly over point E and line
up the cross hairs on G. Set reading to zero. Turn the telescope
90 degrees to the left to establish the line E-F. Measure out the
distance and place a stake at point F. The distance, D-F, (from F
to the lot line) will exactly equal E-C if the work is correct.
Next set up and level the instrument over point F and set the verti-
cal cross hair at point E. Set reading to zero. Turn the telescope
90 degrees to the left to establish the line F-H. Measure out the
distance and place a stake at point H.
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