Campbell Scientific CM110, CM115, CM120 Tripod Installation - Manual (Page 21)

Tripod Installation Manual Models CM110, CM115, CM120
It is important that the anchors be driven at the same angle as the guy wires.
Insert the drive bar into the anchor body and drive the anchor into the ground
using a sledgehammer until only the top half of the loop or metal ring remains
above the ground. Place a bar or highlift jack through the loop or metal ring
and jack the anchor up about four inches to rotate the anchor into the load-lock
position.
Failure to install and lock the anchor at the correct angle
will result in the anchor cable cutting through the soil
until the angles equalize, causing slack.
FIGURE 6-8. Duckbill guy anchor
WARNING
Drive Bar
Duckbill Anchor
13