• The surface of the Nimrud lens had 12 cavities that were opened during grinding. ... Today, the Nimrud lens is kept at the British Museum.
  • This magnifying glass was made of rock crystal and had a convex shape, similar to the Senetjer lenses described in King’s work. The Nimrud Lens.
  • The Nimrud Lens The lens on display in the British Museum Material Rock crystal Size Diameter: 38 mm (1.5 in) Thickness: 23 mm (0.9 in)[1].
  • Assyrian craftsmen made intricate engravings, and could have used such a lens in their work. ... The Nimrud lens is on display in the British Museum.
  • http://www.ancient-origins.net/ancient-technology/assyrian-nimrud-lens-oldest-telescope-world-001381.
  • The Nimrud lens: Whatever its origin, as ornament, as magnifying lens or part of a telescope, the Nimrud lens is the oldest lens in the world.
  • With the glass bowls a rock crystal lens was discovered, with opposite flat and convex faces. ... Nimrud lens. Photo: The British Museum.
  • Because the lens is made from natural rock crystal, the material of the lens has not deteriorated significantly over time.[1]. The Nimrud lens is on display in...
  • The Nimrud lens or Layard lens is a 3000-year old piece of rock crystal, which was unearthed by Austen Henry Layard at the Assyrian palace of Nimrud, in...