Appendix C
Levelling Cradle and Spike Kit
Trillium Compact User Guide
16889R5
2014-03-04
75
C.2 Using the Levelling Cradle and Spike Kit
The shallow side of the cradle (see
) provides threaded holes for connecting the
spikes included with the optional levelling cradle spike kit (Nanometrics part number
16874). The combined levelling cradle and spike kit allows you to achieve a secure, stable,
and level installation on unprepared surfaces such as sediment, soil, sand, or gravel.
The levelling cradle spike kit includes three types of spikes, each of which is meant for a
different type of installation surface:
a) Thick spikes: Three spikes for use in sand; dry, loose soil; or snow.
b) Thin spikes: Three spikes for use in dense, wet soil or clay.
c) Long spike: One spike for use in rocky or frozen soil or ice. If more support is required,
you can use the three thin spikes with the long spike.
shows four views of a Trillium Compact mounted on a levelling cradle with the
various spike configurations.
Figure C-2
Levelling cradle and spike kit assembly configurations
To use the spike kit:
1. Select the appropriate spikes or spike for the installation surface and thread these
tightly into the appropriate threaded holes on the shallow side of the levelling cradle:
•
For sand; dry, loose soil; or snow, thread the three thick spikes into the threaded
holes in the feet of the cradle.
•
For dense wet soil or clay, thread the three thin spikes into the threaded holes in the
feet of the cradle.
•
For rocky or frozen soil or ice, thread the single long spike into the threaded hole in
the centre of the cradle. If more support is needed, also thread the three thin spikes
into the feet of the cradle.
