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1:18 scale is a traditional scale (ratio) for models and miniatures, in which 18 units (such as inches or centimeters) on the original is represented by one unit on the model. Depending on application, the scale is also called two third inch scale since 1 foot is represented by 2/3 of an inch.
Subdivisions of an inch are typically written using dyadic fractions with odd number numerators; for example, two and three-eighths of an inch would be written as 2 + 3 / 8 ″ and not as 2.375″ nor as 2 + 6 / 16 ″. However, for engineering purposes fractions are commonly given to three or four places of decimals and have been ...
The BL 18-inch Mk I naval gun was a breech-loading naval rifle used by the Royal Navy during World War I.It was the largest and heaviest gun ever used by the British. [1] Only the Second-World-War Japanese 46 cm/45 Type 94 had a larger calibre, 18.1 inches (46 cm), but it fired a lighter shell.
The 46 cm (18.1 in) 46 cm/45 Type 94 naval rifle was a wire-wound gun. Mounted in three 3-gun turrets (nine per ship), they served as the main armament of the two Yamato-class battleships that were in service with the Imperial Japanese Navy during World War II. When the turrets and the guns were mounted, each weighed 2,510 tons, which is about ...
There have been a number of 18-inch torpedoes in service with the United States. These have been used on ships and submarines of the US Navy . American "18-inch" torpedoes were actually 17.7 inches (45 cm) in diameter, beginning with the "Fiume" Whitehead torpedo of 1890.
The 18"/48 caliber Mark 1 – United States Naval Gun was the initial name and design for a large caliber naval gun in the early 1920s. After the Washington Naval Treaty prohibited the development of guns larger than 16 in (406 mm), the gun was relined and finished as a high velocity 16"/56 Mark 4 gun.
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Common screen dimensions are listed in the table below (the most common diagonal dimensions in inches as of 2020 are bolded). If the display is not listed, then the following equations can be used. Note that D is the diagonal (in centimeters or inches), W is the width (in pixels), and H is the height (in pixels).