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2. Adjustable-focus eyeglasses - Wikipedia

   en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

   Adjustable focus lenses, like single-focus lenses, also reduce image-jump and spatial distortion in the field of view associated with traditional multi-focal lenses. Additionally, the ideal near-vision correction can be achieved with precision, because the variable lenses emulate the focusing action of the youthful (non-presbyopic) eye.

3. Accurizing - Wikipedia

   en.wikipedia.org/wiki/Accurizing

   Comparison of milliradian (mil) and minute of arc (moa).. Since adjusting the point of impact to match the point of aim is relatively simple with any type of adjustable sights, the primary goal of accurizing is to increase the precision of the firearm, which is generally measured by looking at the dispersion of a number of shots fired at the same point of aim.

4. Burr (edge) - Wikipedia

   en.wikipedia.org/wiki/Burr_(edge)

   Electrochemical deburring is the use of electrochemical machining to deburr precision work pieces and edges that are hard-to-reach, such as intersecting holes. The process uses a salt or glycol solution and electricity to dissolve the burr. The electric current is applied with a specialized tool to reach the burr location.

5. Upgrading Your Home Without Downgrading Your Wallet With ...

   www.aol.com/low-cost-high-impact-24-091732345.html

   Buy Now: amazon.com #2 Simplify Laundry Day With The Bed Sheet Detangler, A Clever And Practical Tool That Makes Quick Work Of Tangled Sheets, Saving You Time And Frustration, And Ensuring Your ...

6. Hughes Tool Company - Wikipedia

   en.wikipedia.org/wiki/Hughes_Tool_Company

   The company was established in December 1908 [1] as Sharp-Hughes Tool Company when Howard R. Hughes Sr. patented a roller cutter bit that dramatically improved the rotary drilling process for oil drilling rigs. He partnered with longtime business associate Walter Benona Sharp to manufacture and market the bit.

7. Autofocus - Wikipedia

   en.wikipedia.org/wiki/Autofocus

   Some cameras (Minolta 7, Canon EOS-1V, 1D, 30D/40D, Pentax K-1, Sony DSLR-A700, DSLR-A850, DSLR-A900) also have a few "high-precision" focus points with an additional set of prisms and sensors; they are only active with "fast lenses" with certain geometrical apertures (typically f-number 2.8 and faster). Extended precision comes from the wider ...