Copper Corner Pyramid Angle Arrow (or Copper L-Arrow Patti). While it serves a similar purpose to standard corner strips, this specific design integrates prominent arrowhead pointers alongside a dense multi-grid layout of micro-pyramids.
Copper L-Pyramid Patti. It is a traditional tool used in Vastu Shastra—the ancient Indian science of architecture and spatial geometry—as a "non-demolition" correction remedy.