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The small pieces punched out by a keypunch fell into a chad box, [2] [3] or (at IBM) chip box, or bit bucket. In many data processing applications, the punched cards were verified by keying exactly the same data a second time, checking to see if the second keying and the punched data were the same (known as two pass verification ).
A toolbox could refer to several types of storage to hold tools. It could mean a small portable box that can carry a few tools to a project location or a large storage system set on casters. [1] Modern toolboxes are predominantly metal or plastic. Wood was the material of choice for toolboxes built beginning in the early 19th century.
A slim jim (more technically known as a lockout tool) is a thin strip of metal (usually spring steel) roughly 60 centimetres (24 in) long and about 2–4 centimetres (0.79–1.57 in) wide originally marketed under that name by HPC Inc., a manufacturer and supplier of specialty locksmithing tools.
The first locking pliers, with the trade name Vise-Grip, were invented by William S. Petersen in De Witt, Nebraska, United States in 1924. [1] [2] Later, in 1955, in the United Kingdom, M K Mole and Son, a hand tool manufacturing company, under the managing direction of Thomas Coughtrie, began making nearly identical pliers.
Manual nibbler, punch-and-die type. A nibbler, or nibblers, [1] is a tool for cutting sheet metal with minimal distortion. They may be used for nibbling.One type operates much like a punch and die, with a blade that moves in a linear fashion against a fixed die, removing small bits of metal and leaving a kerf approximately 6 mm (0.24 in) wide.
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