Spectra Precision Survey Pro v4.5 Recon and Nomad Reference Manual - Manual (Page 385)

Curve Menu
R-377
Line Tangent to Circles
Curve Tangent to Circle .
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.
Solve : 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 T
angent
Point
2nd Radius Pt.
Radius 1
Radius 2
Tangent Line
Line Tangent to Circles solution illustrating
the location of a Left-Left Tangent Line.