FINNED SLEEVE FOR DRIVEN TYPE SURVEY MONUMENTS

摘要

FINNED SLEEVE FOR DRIVEN TYPE SURVEY MONUMENTS A sleeve is provided for a driven-type survey monument having a penetrating point and cylindrical rod sections to stabilize the monument in the ground. The sleeve has an elongated body having a hollow bore, which receives a first portion of the survey monument, and a plurality of fins formed integrally with and extending outwardly from the elongated body of the sleeve.