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Container for storing a mechanical pencil's lead. Polymer pencil leads with 0.5mm diameter. Mechanical pencil mechanisms use only a single lead diameter. Some pencils, such as the Pentel Function 357, place several mechanisms within the same housing, so as to offer a range of thicknesses (in this case three: 0.3, 0.5 and 0.7 mm). 1.00 mm leads ...
A cross section of these barrel styles reflect different ink types. For example, the 3-series barrel is available in ballpoint, gel, mechanical pencil, fountain pen, highlighter, and rollerball pen. All Zebra stainless steel products are refillable, including leads and mechanical pencil erasers.
"PPA" stood for Porte-plume, Porte-mines et Accessoires; pens, mechanical pencils and accessories. During the war, Bich had seen the ballpoint pen manufactured in Argentina by László Bíró. Between 1949 and 1950, the Bic Cristal was designed by the Décolletage Plastique design team at Société PPA.
The District of Columbia defines "lead-based paint" as any "paint, surface coating that contains lead equal to or exceeding 0.7 milligram per square centimeter (0.7 mg/cm2) or 0.5% by weight." [9] This is more stringent than the HUD lead-based paint standard of 1.0 mg/cm2) . Some states have adopted this or similar definitions of "lead-based ...
A ballpoint pen, also known as a biro [1] (British English), ball pen (Hong Kong, Indonesia, Pakistani, Indian and Philippine English), or dot pen [2] (Nepali English and South Asian English), is a pen that dispenses ink (usually in paste form) over a metal ball at its point, i.e., over a "ball point".
In 1770, Peter Simon Pallas visited the same site as Lehmann and found a red lead mineral that was discovered to possess useful properties as a pigment in paints. After Pallas, the use of Siberian red lead as a paint pigment began to develop rapidly throughout the region. [ 57 ]
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