CONSUMABLE MATERIAL TO FIX SPECIAL SURVEY CONTROL SYSTEM POINTS AFIELD

摘要

FIELD: physics. ^ SUBSTANCE: proposed material comprises rod with its top end provided with mark rigidly secured thereto and bottom end jointed with underground anchor. Said rod is made from wood or any other nonmetallic material. Rod bottom part features taper surface. Mark represents a cylindrical cup with its bottom provided with collar extending outside its outer surface and its edges having outer flanging. Aforesaid anchor is made up of truncated-cone cup with all-metal taper tip rigidly attached to its taper part. Cylindrical cup outer surface accommodates spring retainer whereto plate is attached. ^ EFFECT: ease of use. ^ 4 dwg