Talk:PK nail
PK nails have a short thick shank to facilitate driving into hard surfaces such as asphalt. They are made of a material that responds to the magnetic pin finders used by surveyors to locate previously marked points.
PK nails have a short thick shank to facilitate driving into hard surfaces such as asphalt. They are made of a material that responds to the magnetic pin finders used by surveyors to locate previously marked points.