Pentax R-200 Series - Page 106

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A B: Distance between Point A and B. This is always positive.
P A – B Distance between Int. P and P, This is positive or negative as shown below.
Int.P: Intersection point
P: SOP, Stake Out Point
Int. P A Distance between Int. P and A, This is positive or negative.
Int. P B Distance between Int. P and B, This is positive or negative.
The arrow direction is positive.
−
Int.P
−
+
A
B
P
+
Int.PA
B
P
−
A
B
P
Int.P
+
−