Offset Measurement; Offset Single-Distance Measurement - Sokkia X-1000 series Operator's Manual

16.OFFSET MEASUREMENT

Offset measurements are performed in order to find a point where a target cannot be installed directly or to find
the distance and angle to a point which cannot be sighted.
• It is possible to find the distance and angle to a point you wish to measure (target point) by installing the target
at a location (offset point) a little distance from the target point and measuring the distance and angle from
the survey point to the offset point.
• The target point can be found in the three ways explained in this chapter.
• The instrument station and backsight must be set before the coordinates of an offset point can be found.
Station and backsight setup can be performed in the Offset menu.

Occupy setup: "13.1 Entering Instrument Station Data", Backsight setup: "13.2 Azimuth Angle Setting".
• It is possible to allocate Operating icons in measurement menus to suit various applications and the ways that
different operators handle the instrument.

"19.12 Allocating Operating Icons"

16.1 Offset Single-distance Measurement

Finding it by entering the horizontal distance from the target point to the offset point.
• When the offset point is positioned to the left or right of the target point, make sure the angle formed by lines
connecting the offset point to the target point and to the instrument station is almost 90°.
• When the offset point is positioned in front of or behind the target point, install the offset point on a line linking
the instrument station with the target point.
PROCEDURE
1. Set the offset point close to the target point and
measure the distance between them, then set up
a prism on the offset point.
2. Select "Offset" in <Menu> to display <Offset>.
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