Caliber

In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires, in hundredths or sometimes thousandths of an inch. For example, a 45 caliber firearm has a barrel diameter of .45 of an inch. Barrel diameters can also be expressed using metric dimensions, as in "9mm pistol." When the barrel diameter is given in inches, the abbreviation "cal" (for "caliber") can be used. For example, a small-bore rifle with a diameter of 0.22 inches can be referred to as .22 or a .22 cal; however, the decimal point is generally dropped when spoken, making it a "twenty-two caliber" or a "two-two caliber rifle".

In a rifled barrel, the distance is measured between opposing lands or grooves; groove measurements are common in cartridge designations originating in the United States, while land measurements are more common elsewhere. Good performance requires a bullet to closely match the groove diameter of a barrel to ensure a good seal.

Calibre (musician)

Calibre, birth name Dominick Martin, is a drum and bass and liquid funk, music producer and DJ hailing from Belfast, Northern Ireland. He started producing at a young age. He is a classically trained musician, playing a variety of musical instruments. Martin started producing Drum and Bass in 1995 and his first signed release was credited under the now defunct Quadrophonic label.

He soon came to the attention of drum and bass DJ Fabio, who signed Calibre to his Creative Source label. While studying Fine Arts at the University of Ulster in Belfast, he became interested in the music of John Cage whose work was influential in titling Martin’s first album release Musique Concrète in 2001. Since his initial releases in 2001, Martin has been known for his consistent signature style and sound.

Short Circuits Magazine refers to him as "one of the quietest people in drum and bass". He shares tracks with only a small circle of friends. Martin has no website or even any blog presence to distribute his tracks online.

Movement (clockwork)

In horology, a movement, also known as a caliber, is the mechanism of a clock or watch, as opposed to the case, which encloses and protects the movement, and the face which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving parts. It is less frequently applied to modern electronic or quartz timepieces, where the word module is often used instead.

In modern mass-produced clocks and watches, the same movement is often inserted into many different styles of case. When buying a quality pocketwatch from the mid-19th to the mid-20th century, for example, the customer would select movement and case individually. Mechanical movements get dirty and the lubricants dry up, so they must periodically be disassembled, cleaned, and lubricated. One source recommends servicing intervals of: 3–5 years for watches, 15–20 years for grandfather clocks, 10–15 years for wall or mantel clocks, 15–20 years for anniversary clocks, and 7 years for cuckoo clocks, with the longer intervals applying to antique timepieces.