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The A. C. Gilbert Company was an American toy company, once one of the largest in the world. Gilbert originated the Erector Set, which is a construction toy similar to Meccano in the rest of the world, and made chemistry sets, microscope kits, and a line of inexpensive reflector telescopes.
Grinding a mirror using an abrasive and a smaller tool over 300 mm mirror ("ATM Korenica 2006", in Korenica, Croatia) Since the Newtonian reflector is the most common telescope built by amateur telescope makers, large sections of the literature on the subject are devoted to fabrication of the primary mirror .
It is also known as a surveyor's level, builder's level, dumpy level or the historic "Y" level. It operates on the principle of establishing a visual level relationship between two or more points, for which an inbuilt optical telescope and a highly accurate bubble level are used to achieve the necessary accuracy. Traditionally the instrument ...
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Craftsman is a line of tools, lawn and garden equipment, and work wear.Originally a house brand established by Sears, the brand is now owned by Stanley Black & Decker.. As with all Sears products, Craftsman tools were not manufactured by Sears during the company's ownership, but made under contract by various other companies.
Fructose is a natural sugar found in fruits, vegetables, and honey. Fructose can be bad for your health when consumed as part of high-fructose corn syrup in processed foods.
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