Topcon Pocket-3D Reference Manual page 161

– Obs end pt: press Obs end pt to measure the ending point of
the straight element only, instead of manually entering in the
values.
– Radius (start): enter the inner radius of the curve or spiral
element.
– Radius (end): enter the outer radius of the spiral element.
– Curves to the: select the direction, either right or left, in
which the element curves.
• Insert – on the Centerline elements dialog box (Figure 3-73),
press Insert to add an element above the selected element. All
following elements will be shifted by the length of the inserted
element. See the "Add" bullet on page 3-50 for details on
inserting an element.
• Edit – on the Centerline elements dialog box, press Edit
(Figure 3-73) to edit the selected element. See the "Add" bullet
on page 3-50 for details on editing an element.
• Delete – on the centerline elements dialog box (Figure 3-73),
press Delete to remove the highlighted element.
The Vertical profile
edits, or deletes alignment elements. After creating vertical profiles,
press Next to display the Template definitions dialog box 
(Figure 3-74 on page 3-52).
P/N 7010-0628
Figure 3-73. Centerline Element Parameters
dialog box (Figure 3-74 on page 3-52) creates,
Alignment
3-51