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  2. Automatic center punch - Wikipedia

    en.wikipedia.org/wiki/Automatic_center_punch

    An automatic center punch is a hand tool used to produce a dimple in a workpiece (for example, a piece of metal). It performs the same function as an ordinary center punch but without the need for a hammer. When pressed against the workpiece, it stores energy in a spring, eventually releasing it as an impulse that drives the punch, producing ...

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...

  4. L. S. Starrett Company - Wikipedia

    en.wikipedia.org/wiki/L._S._Starrett_Company

    Website. www.starrett.com. The L. S. Starrett Company is an American manufacturer of tools and instruments used by machinists, tool and die makers, and the construction industry. The company was founded by businessman and inventor Laroy Sunderland Starrett in 1880. The company patented such items as the sliding combination square, bench vises ...

  5. List of optometric abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_optometric...

    Description (notes) AC. Anterior chamber. fluid-filled space between the iris and the endothelium. AC 4/4. Grade 4 anterior chamber angle. open angle between cornea and iris. AC 3/4. Grade 3 anterior chamber angle.

  6. 'Fine Taylor...you win': Elon Musk reacts to Taylor Swift's ...

    www.aol.com/fine-taylor-win-elon-musk-144545832.html

    Swift endorses Harris. Shortly after the presidential debate ended Tuesday night, Swift announced she would be supporting Harris and Tim Walz in the upcoming elections. Sharing a photo of herself ...

  7. Optical mark recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_mark_recognition

    Optical mark recognition (OMR) collects data from people by identifying markings on a paper. OMR enables the hourly processing of hundreds or even thousands of documents. A common application of this technology is used in exams, where students mark cells as their answers. This allows for very fast automated grading of exam sheets.

  8. Certificate of attendance - Wikipedia

    en.wikipedia.org/wiki/Certificate_of_attendance

    The certificate is signed by him and dated 27 April 1755 by hand. The upper part of the certificate is an engraving of a bust of William Harvey. A certificate of attendance (also certificate of participation) [1] is an official document proving the attendance of a class, a language course [2] or a training course. [3]

  9. Federal judge orders 100-year-old Illinois prison depopulated ...

    www.aol.com/news/federal-judge-orders-100-old...

    SPRINGFIELD, Ill. (AP) — Illinois must move most of the inmates at its 100-year-old prison within less than two months because of decrepit conditions, a federal judge ruled. The Illinois ...