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Quink was heavily advertised, and an immediate success. According to Kenneth Parker's personal journal, Quink production began on March 17, 1931, and $89,000 worth had been shipped by October 22—more than twice the company's expectations and an excellent return on the $68,000 spent on its development. [2]
It was a simple cylindrical plastic cap and barrel roller-ball pen called the "Parker RB1". [27] In 1984, Parker added the FP1 ("Fountain Pen 1"), with essentially the same design. The RB1 and FP1 models were produced until 1986, at which time Parker revised the pen by lengthening the cap and shortening the barrel and renaming the new pen the ...
Surfactants reduce the surface tension of the ink; distilled water has a surface tension of 72 dyn/cm (72 × 10 −3 N/m), but the desirable value for ink is between 38 and 45 dyn/cm (38 to 45 × 10 −3 N/m). If the ink's surface tension were too high, then it would not flow through the pen; if it were too low, then the ink would run out of ...
The Parker Jotter is the Parker Pen Company's second and best-selling retracting refillable ballpoint pen. The first was the Hopalong Cassidy ballpoint (Later a fountain pen, mechanical pencil and rollerball pen were introduced to the line). Since 1954, over 750 million have been sold worldwide.
Still, Trump's nomination of Scott Bessent to the top Treasury post raised hopes that tariffs will be more measured. And with only 21 trading days left in the year, analysts, investors, and market ...
How to Reset Female Hormones For Weight Loss. This article was reviewed by Craig Primack, MD, FACP, FAAP, MFOMA. Hormones can be helpful heroes, supporting the immune system and a healthy sleep ...
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In contrast, the standard PR (Pressurized Refill) cartridge is rated to write for over 12,000 feet (2.3 miles or 3.7 km). Standard Space Pen refills can be used in any pen able to take a standard Parker -type ballpoint refill, using the small plastic adapter that is supplied with each refill.
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