Like the adaptations that created the M2 and M4, the M1918 was also fitted with a removable liner in 1927 and a barrel 50 calibers long, becoming the 3-inch M1 a year later the M3 weapon was introduced with a larger removable liner. 'Semi-automatic' on this type of weapon meant that the breech would open automatically after firing. The barrel of the M1918 was shortened to 40 calibers and a semi-automatic breech was added. This weapon had a barrel 50 calibers long instead of 55 calibers, and a smaller breech with a different cartridge (76.2x585R, 212 cubic inches instead of 76.2圆90R, 293 cubic inches). This weapon was based on the Driggs-Seabury 3-inch gun M1898, a smaller predecessor of the M1903. M10 tank destroyer, sporting the 3-inch M7 External imagesįor mobile use the original coastal gun was too heavy, so a smaller version was developed as the 3-inch M1918.

The M1917, M2, and M4 remained in service through World War II. However, the M2 and M4 appear to have been produced in small quantities. In 1928 it was further improved in the 3-inch M4 by using a thicker removable liner that eased manufacturing. In the immediate post-war era it was developed as the 3-inch M2, using a removable barrel liner. Most of the weapons were deployed at United States Army Coast Artillery Corps seacoast forts after World War I. A number were used during World War I on fixed mountings 116 were completed by April 1919. The gun was essentially an unmodified 3-inch M1903 (76.2 mm L/55) coastal-defense gun barrel on a new fixed mount allowing it to be aimed to high elevations. Only a few were built, as the similar 3-inch gun M1918 on a mobile mount was considered more useful and was produced in large numbers.ĭevelopment of the M1917 started in 1915, and as the name implies, took two years to enter service. The 3-inch gun M1917 was the United States Army's first dedicated anti-aircraft gun, entering service during World War I. The M3 3' gun was later adapted for the anti-tank role, serving as the main armament of the M10 tank destroyer during World War II. The M3 was subsequently replaced by the M1 90mm AA gun early in World War II, primarily during 1942. Therefore, another way would be:Ĭentimeters = inches / 0.The 3-inch gun M1918 was a United States 3-inch anti-aircraft gun that entered service in 1918 and served until it was largely superseded by the 3-inch anti-aircraft gun M3 in 1930, though the M1918 remained with some National Guard units until early in World War II. The factor 2.54 is the result from the division 1 / 0.393701 (centimeter definition). To calculate a inch value to the corresponding value in centimeters, just multiply the quantity in inches by 2.54 (the conversion factor). Inches to centimeters formula and conversion factor

A centimeter is equal to 0.01 (or 1E-2) meter. The centimeter practical unit of length for many everyday measurements. It is also the base unit in the centimeter-gram-second system of units.

The centimeter (symbol: cm) is a unit of length in the metric system. The inch is a popularly used customary unit of length in the United States, Canada, and the United Kingdom. Though traditional standards for the exact length of an inch have varied, it is equal to exactly 25.4 mm. It is defined as 1⁄12 of a foot, also is 1⁄36 of a yard. The result is the following:ģ5 x 62 x 91 inches = 88.9 x 157.48 x 231.14 cm Definition of inchĪn inch (symbol: in) is a unit of length. In this case to convert 35 x 62 x 91 inches into cm we should multiply the length which is 35 inches by 2.54, the width which is 62 inches by 2.54, and the height which is 91 inches by 2.54. One inch equals 2.54 centimeters, in order to convert 35 x 62 x 91 inches to cm we have to multiply each amount of inches by 2.54 to obtain the length, width and height in centimeters. To convert length x width x height dimensions from inches to centimeters we should multiply each amount by the conversion factor.

35mm to inches