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Show Square Offset

The Show Square Offset function displays the Offset distance of a point from a line.

If a centre point is clicked or entered, the square offset geometry is different.
See the diagram at the bottom of the page.
  1. It will show the Arc Distances instead of the straight line distances.
  2. The offset is from the 'FromPt' to the circular curve.
  3. The straight line is through the centre point and the From Pt.
From Point
To select the offset or From point, click on a point on the screen, or enter the point number at the keyboard. Type in the point number and press ENTER, TAB or Down Arrow to move to the next field.

Point 1
To select Point 1 on the line, click on a point on the screen, or enter the point number at the keyboard. Type in the point number and press ENTER, TAB or Down Arrow to move to the next field.

To select a line, click on the line and the two end points of the line will appear as Point 1 and Point 2.

Point 2
To select Point 2 on the line, click on a point on the screen, or enter the point number at the keyboard. Type in the point number and press ENTER, TAB or Down Arrow to move to the next field.

To select a line, click on the line and the two end points of the line will appear as Point 1 and Point 2.

Centre Point
Optional, click the centre point or enter it at the keyboard.
If a centre point is entered, the radii to points 1,2 will be checked and if within 20% of the radius, the distances 1-Ip, IP-2 will be shown as arc distances.

Bearing 1 - 2
This field is the bearing of the line from Point 1 to Point 2 in (258°10'43") format.

Dist 1–IP
This is the distance from Point 1 to the Intersection Point (IP) in metres.
If the line 1-2 is a circular arc, this will be shown as the Arc Distance (Arc Dist 1-IP)

Dist IP-2
This is the distance from the Intersection Point (IP) to Point 2 in metres.
If the line 1-2 is a circular arc, this will be shown as the Arc Distance (Arc Dist IP-2)

Grid Offset
This is the offset distance of the From point to the line Pt1 – Pt2.

Ground Offset
If the job is on a Datum, this will show the Ground Offset distance

Note: All distances (1-IP, IP-2, Offset, Radius) are GRID distances except for this field

Left or Right
This indicates if the point is on the Left or the Right of the line Pt1 – Pt2.

Hold Pt1-Pt2
Tick this to hold the Point 1, Point2 and Centre Point values.
This makes it easy to click on successive 'From' points to show the square offset from a line.

Advanced
Tick this to display the 'Advanced version which retains a listing of successive Square Offsets.