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2. Coddington magnifier - Wikipedia

   en.wikipedia.org/wiki/Coddington_magnifier

   A Coddington magnifier is a magnifying glass consisting of a single very thick lens with a central deep groove diaphragm at the equator, thus limiting the rays to those close to the axis, which minimizes spherical aberration. This allows for greater magnification than a conventional magnifying glass, typically 10× up to 20×. Most single lens ...

3. Block 37 - Wikipedia

   en.wikipedia.org/wiki/Block_37

   108 North State Street, also known as Block 37, is a development located in the Loop community area of downtown Chicago, Illinois.It is located on the square block bounded clockwise from the North by West Randolph Street, North State Street, West Washington Street and North Dearborn Street that is known as "Block 37", which was its designated number as one of the original 58 blocks of the city ...

4. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   A pen seen through a magnifying glass Jim Hutton as detective Ellery Queen, posing with a magnifying glass. A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. Beyond its primary function of magnification, this simple yet ingenious tool serves a ...

5. Chicago Loop - Wikipedia

   en.wikipedia.org/wiki/Chicago_Loop

   The Loop, along with the rest of downtown Chicago, is the second largest commercial business district in the United States after New York City's Midtown Manhattan. Its financial district near LaSalle Street is home to United Airlines, Hyatt Hotels & Resorts, and CME Group's Chicago Board of Trade and Chicago Mercantile Exchange.

6. Dome magnifier - Wikipedia

   en.wikipedia.org/wiki/Dome_magnifier

   A dome magnifier is a dome-shaped magnifying device made of glass or acrylic plastic, used to enlarge words on a page or computer screen. They are plano-convex lenses : the flat (planar) surface is placed on the object to be magnified, and the convex (dome) surface provides the enlargement.

7. Free Online Games: Play board games, card games, casino ... - AOL

   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.