The standard marker consists of a polyroc head with three anchor lengths: 350, 500 and 600 mm. The polyroc head is available in three colours and is manufactured from resin-concrete, a material which is very similar to granite.
Polyroc standard marker Marker with a polyroc head in composite material and galvanized steel survey spike in compliance with the norm NF EN ISO 1461.
The length of the survey spike will determinate the anchoring depth.
A locking sleeve is delivered with polyroc head marker.
The sleeve prevents rotational and lateral movements of one element against the other.