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An automatic center punch is a hand tool used to produce a dimple in a workpiece (for example, a piece of metal). It performs the same function as an ordinary center punch but without the need for a hammer. When pressed against the workpiece, it stores energy in a spring, eventually releasing it as an impulse that drives the punch, producing ...
A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder (such collected sheets are called loose leaves). A hole punch can also refer to similar tools for other materials, such as leather, cloth, or sheets ...
Also called "rolling with the punch" or "riding the punch". Peek-a-Boo — a defensive style often used by a fighter where the hands are placed in front of the boxer's face, [6] like in the babies' game of the same name. It offers extra protection to the face and makes it easier to jab the opponent's face.
The one-inch punch is a skill which uses fa jin (translated as explosive power) to generate tremendous amounts of impact force at extremely close distances. This "burst" effect had been common in Neijia (internal martial art) forms. When performing this one-inch punch the practitioner stands with their fist very close to the target (the ...
A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tendency to "wander" if it does not start in a recess. A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1]
A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card[1] or punched-card[2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines. Punched cards were widely used in the 20th century, where unit ...
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