Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 405)

Curve Menu
R-397
Traverse on Spiral
Curve Trav. on Spiral .
The Traverse on Spiral screen is used to compute the location of, and
optionally store the SC, or ST and spiral PI points.
Radius: is the radius of the circular curve.
Length: is the length along the spiral curve
from TS to SC.
TS / CS Point: is the existing point associated
with the TS or CS point.
Azimuth / Bearing : is the tangent
direction at the TS or CS point.
TS->SC: specifies that the curve starts at the
tangent to spiral and ends at the spiral to
curve.
CS->ST: specifies that the curve starts at the curve to spiral and
ends at the spiral to tangent.
Right / Left: specifies is the curve turns toward the right or left as
you face the spiral from the TS or CS.
; Store SC / ST: When checked, saves a point for the computed SC
point.
; Store PI : When checked, saves a point for the computed spiral PI.