Spectra Precision Survey Pro v3.80 Recon iPAQ Reference Manual - Manual (Page 197)

Curve Menu
R-191
Line Tangent to Circles
&XUYH 7DQJHQW WR &LUFOH
Will compute the location of a line that is tangent to the specified
sides of two specified circles.
Tangent Line : determines which sides of the circles the
computed line will be tangent to as you occupy the 1st
Radius Point and face the 2nd Radius Point . (See
illustration below.)
1st / 2nd Radius Pt : defines the points around which the
circles are computed.
Radius : defines the radius of the circles that are used to
compute the Tangent Line .
;
Store Tan Pt : When checked, will store the computed
tangent points.
6ROYH : computes the location of the tangent line and
optionally stores the two tangent points.
Results
TP 1 : displays the coordinates for the first
tangent point.
TP 2 : displays the coordinates for the second
tangent point.
Azimuth : is the azimuth of the tangent line from
the first tangent point to the second.
Distance : is the length of the tangent line.
1st Radius Pt.
1st Tangent
Point
2nd Tangent
Point
2nd Radius Pt.
Radius 1
Radius 2
Tangent Line
Line Tangent to Circles solution illustrating
the location of a
Left-Left Tangent Line.