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The round pen, sometimes called a bullpen, is a round enclosure used for horse training. They range in diameter from a minimum of 30 feet (9.1 m) to a maximum of 100 feet (30 m), [ 1 ] with most designs 50 to 60 feet (15 to 18 m) in diameter.
Since the last quarter of the 20th century, phenolic resin and cellulose based compound materials have been used as an alternative to ebony and rosewood to make stringed instrument fingerboards. [3] From 2012 to 2018 guitarmaker Gibson used Richlite , a paper composite material, for the fingerboard on several top-of-the-line production guitars.
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.
The "B-style Nib" had a round section at the head of the nib that would round off the beginning and the ending of each pen stroke. The "C-style Nib" is the chisel-point nib that creates thick and thin lines depending on the angle the pen is held. The C-style nibs are a favorite of many calligraphers.
In the 1980s, Berol won the contract to supply the BBC with standard and a wide range of promotional pens, highlighters, and permanent markers which proved extraordinarily popular, many of which were kept as souvenirs and continued to be workable for in excess of forty years. Product lines manufactured by Berol were: [5]
Heart-shaped holes will improve flex as they widen, while round, small holes stiffen the pen. Fourth, the length of the tines determines how far they can spread under pressure; shorter tines make a stiffer nib. Fifth, the alloy used can affect stiffness: as mentioned before, gold is considered superior for its flex compared to steel.
Surfaces used with grease pencils include glass, rock, polished stone, plastic, ceramics, acetate, and other glazed, lacquered or polished surfaces, and metal, as well as the glossy paper that is used for photographic printing (particularly for contact sheets), x-rays, maps, and for marking edits on analog audio tape and film.
Though round barns were not as popular as some other barn designs, their unique shape makes them noticeable. The years from 1880 to 1920 represent the height of round barn construction. [1] Round barn construction in the United States can be divided into two overlapping eras. The first, the octagonal era, spanned from 1850 to 1900. The second ...
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