The Patwari Guniya is a traditional and essential surveying instrument widely used by land surveyors and Patwaris in rural and urban areas for chain surveying and field measurements. Crafted from high-quality brass, this precision instrument consists of two fixed arms forming a perfect 90° angle, often with a 45° diagonal for triangulation. Its robust construction ensures long-lasting durability in rough outdoor conditions, making it ideal for demarcating land boundaries, layout planning, and agricultural surveys. This simple yet reliable tool is highly valued in Indian land records, cadastral mapping, and revenue department work. Lightweight and easy to handle, the Patwari Guniya is a must-have for every field surveyor and land technician who requires accurate corner marking and straight-line guidance without relying on advanced electronic instruments.