What Does Topographic Land Survey Bangladesh Mean?
দিয়ারা আঞ্চলিক সেটেলমেন্ট অফিস, বরিশালDutch mathematician Willebrord Snellius (a.k.a. Snel van Royen) launched the trendy systematic usage of triangulation. In 1615 he surveyed the distance from Alkmaar to Breda, roughly 72 miles (116 km). He underestimated this length by three.five