Benchmarks / Crow's Feet / War Department Boundary Stones

Benchmarks in Ireland were integral to the Ordnance Survey of the 19th century, helping to map the country's terrain with great accuracy. They helped measure distances and heights above sea level. They were essential for precise mapping, used to create a network of reference points for further surveys. These markers, can still be found on buildings and monuments around Nenagh today.

In popular folklore they were often known as Sappers Marks or Crow’s Foot / Feet.

Benchmarks | A miscellany of topics | Our Irish Heritage

In Nenagh there were what I have seen termed War Department Boundary Stones. These are around the Barracks on Summerhill / Ormond Street.

They marked the boundaries of lands owned by the War Department. For more on this see the following link.

War Department Boundary Stones - The ARC

See the link below to the location of Benchmarks / Crow's Feet / War Department Boundary Stones in Nenagh Town. 

Link to google map here