America’s leader in permanent survey markers.
Cast iron buried 300 years ago is still intact. Only the passage of centuries will show the full extent of its lasting durability.
Yesterday’s surveyors marked boundaries with wooden posts, stones, concrete, steel bars, pipes, and aluminum. Harrison Marker has a better solution.
Cast Iron or Aluminum?
Historically, survey markers have been made from a variety of material, such as wood, stone, concrete, steel bars—and recently, aluminum.
Here’s why experienced surveyors choose cast iron:
Permanent—Cast iron won’t disintegrate when exposed to the elements like aluminum will.
Stable—Cast iron is secure in all soils and resists pull-out thrusts. If a Harrison Marker is accidentally struck, the top will break away while the bottom maintains position.
Magnetic—Cast iron markers are easily located; a dip-needle or electronic sensing device will respond emphatically.
Economical—Cast iron is abundant and low in cost.
Cast iron, unlike aluminum, is the most permanent of all metals because corrosion doesn’t flake off. Instead it builds up and becomes nature’s protective coat of paint.
“It was more than just a survey marker; it was a work of art that showed many years of combining hard work with passion.”
- The American Surveyor
What people are saying.
“I’ve been using Harrison Markers for 25 years. I choose Harrison’s cast iron markers because survey markers should last forever. As it rusts, it creates a hard coating to protect it from the elements. The bottom [of the marker] is built to stay in place, but if the top is knocked off, the rest stays put and the marker can still be located.”
— Dean G., MI County Surveyor