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  2. Watermark - Wikipedia

    en.wikipedia.org/wiki/Watermark

    The dandy roll is a light roller covered by material similar to window screen that is embossed with a pattern. Faint lines are made by laid wires that run parallel to the axis of the dandy roll, and the bold lines are made by chain wires that run around the circumference to secure the laid wires to the roll from the outside. Because the chain ...

  3. Postage stamp paper - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_paper

    A rare flaw in paper is when the watermark bit has been improperly repaired on the Dandy roll. Great Britain's Emblems watermark is composed of two roses, one shamrock and one thistle. A defect was created when the Dandy roll was repaired and instead of a thistle bit, a rose bit was added creating the three roses and a shamrock flaw. This flaw ...

  4. File:Dandy Roll.png - Wikipedia

    en.wikipedia.org/wiki/File:Dandy_Roll.png

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  6. U.S. to roll out 'Cyber Trust Mark' label on secure devices ...

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    The U.S. will begin rolling out a program to label certain internet-connected products as meeting a basic cybersecurity standard, a White House official said Tuesday.

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  8. Derail - Wikipedia

    en.wikipedia.org/wiki/Derail

    A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended rolling stock. [1] The device works by derailing the equipment as it rolls over or through it.

  9. DC plane crash updates: Probe makes progress as crews still ...

    www.aol.com/dc-plane-crash-updates-probe...

    A crane retrieves part of the helicopter from the Potomac River, in the aftermath of the collision of American Eagle flight 5342 and a Black Hawk helicopter that crashed into the river, by the ...

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