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5 1 ⁄ 4 inch Single 1 80 11-19 (variable) 512 612 kB [27] 252-417 (variable) GCR Disks varied sectors / track and disk speed to keep consistent bit density across tracks [26] Double 2 512 1,196 kB [27] Tandy TRS-80 5 1 ⁄ 4 inch Single 1 35 10 256 soft 88 kB 300 FM Model 1/3/4 5 1 ⁄ 4 inch Double 1 40 18 256 180 kB MFM Model 1/3/4P 5 1 ...
50 mm (2.0 in) 5 cm SK L/40 gun German Empire: World War I - World War II 52 mm (2.0 in) 5.2 cm SK L/55 gun German Empire: World War I - World War II 57 mm (2.2 in) QF 6 pounder Hotchkiss 8 cwt Mk I, Mk II France: World War I 57 mm (2.2 in) QF 6 pounder Nordenfelt United Kingdom: 1880s - 1920s 57 mm (2.2 in) QF 6 pounder 10 cwt gun Mk I
Initially made only with a 6-inch (15 cm) barrel, a compact 4-inch (10 cm) came afterward. Between 1955 and 1994, a downsized 2.5-inch (6.4 cm) barrel version was introduced which still sported full-sized grips. Colt also produced a few short runs of revolvers with a 3-inch (7.6 cm) barrel known to collectors as "Combat Pythons." [27] [28]
The Claridge Hi-Tec and its antecedent the Goncz High-Tech Long Pistol are semi-automatic pistols designed by Hungarian inventor Lajos John Goncz. [2][3] This unique firearm features a telescopic bolt design encased in a tubular upper receiver with a forged steel frame, button rifled match barrels, and 16-round magazines standard.
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
The 6.5-284 has been used extensively in benchrest competitions and is known as an extremely accurate long range round. Using an improved version of the 6.5-284, Rich DeSimone set a 1,000-yard (914.4 m) world record with a 1.564-inch (39.73 mm) group. [4] Rich DeSimone's 1,000-yard (914.4 m) record has been broken by Tom Sarver, who shot a 1. ...
The Nordenfelt gun was a multiple-barrel organ gun that had a row of up to twelve barrels. It was fired by pulling a lever back and forth and ammunition was gravity fed through chutes for each barrel. It was produced in a number of different calibres up to 25 mm (0.98 in). Larger calibres were also used, but for these calibres the design simply ...
6-round (686) or 7-round (686 Plus) cylinder. The Smith & Wesson Model 686 is a six- or seven-shot double-action revolver manufactured by Smith & Wesson and chambered for the .357 Magnum cartridge; it will also chamber and fire .38 Special cartridges. Smith & Wesson introduced the Model 686 in 1981. It is the stainless steel version of the ...