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Staedtler technical pens Staedtler technical pen divided in parts in comparison with 1 cent euro coin Macro image of a 0.7 mm Rotring Rapidograph nib showing the flow control wire. A technical pen is a specialized instrument used by an engineer, architect, or drafter to make lines of constant width for architectural, engineering, or technical ...
Demand for a Sign Pen was so extraordinary that the Tokyo factories could not supply all requests. [8] The Sign Pen was one of Pentel's most successful products with more than two billion units sold. [2] In 1971 the company changed its name to "Pentel Co. Ltd." and one year later, the green rollerball pen with water-based ink, was launched. [2]
Throughout the 1950s and 1960s, the Bic Cristal's writing tip and ergonomic design helped shift the worldwide market for pens from fountain pens to ballpoints. In 1959 Bich brought the pen to the American market: the Bic pen was soon selling at 29 cents (equivalent to $3.13 in 2024) with the slogan "writes first time, every time."
Gel pens can be used for many types of writing and illustration. The general design of a gel pen is similar to that of a regular ink-based pen, with a barrel containing the writing mechanism and a cap, and a reservoir filled with ink. At the end of the ink tube is an ink "follower", made of more viscous gelled material which is usually ...
Luer taper, a standardized fitting system used for making leak-free connections between syringe tips and needles. Needle exchange programme , is a social policy based on the philosophy of harm reduction where injecting drug users (IDUs) can obtain hypodermic needles and associated injection equipment at little or no cost.
Adding distance between the breather hole and the nib tip adds elasticity or flexibility to the nib. The whole nib narrows to a point where the ink is transferred to the paper. Broad calligraphy pens may have several slits in the nib to increase ink flow and help distribute it evenly across the broad point. Nibs divided into three "tines" are ...
The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm).
A cable needle is a special type of double-pointed needle that is typically very short and used to hold a very small number of stitches temporarily while the knitter is forming a cable pattern. They are often U-shaped, or have a U-shaped bend, to keep the held stitches from falling off while the primary needle is being used.