Any equipment that needs precision has advanced in design with the help of the right kind of bearings. Earlier only steel and its alloys were used in the manufacture of bearings but in these modern times this has been almost completely replaced with new like a sapphire , ceramic , half ball lens and even a These are definitely more precise when used in instruments and are also stronger and are able to resist heat and even reaction to chemicals. Glass ball lens are used extensively in the optical industry for various applications as these offer the best clarity especially useful for microscopes and slides and other scientific apparatus. In the same way a glass half has its uses in the industry and is used for products that need a concave or a convex lens for a specific type of reading. A glass even half ball lens are economical compared to other types of precision ball and have various practical uses as well. A sapphire ball lens is as useful as a glass ball lens and is preferred in many industries. While popular a precious stone the Sapphire is also used to make minute balls that are used in various precision instruments. Similarly the ceramic ball also has its uses and has properties that make it invaluable in many industries. A lot of precision goes into the making of this ball lens whether they are made out of Sapphire or Ceramic. The measurements and tools that are used to make these must be very accurate to ensure that these in turn are able to do their job precisely. There are many companies that manufacture these balls and some more along with these like the ruby ball, the cubic zirconia ball etc. With such advancement in technology, the manufacturing units ensure that everything is done as per the best industry standards that include hygiene and safety. Packaging of these lenses is also very important and professional companies ensure that every precaution is taken to maintain the highest possible manufacturing standards. There are many online sites featuring companies that manufacture and supply these products. One can browse through the sites to find one that provides the best products at cost effective prices. Among the many companies available choose one that is highly reputed with a high standard of delivery as well. Visit the various sites for all kinds of detailed information on the different lens available to be assured of the quality of the products available.