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A safe may be compromised by using a manufacturer-set combination. Known as try-out combinations, these allow an owner initial access to their safe in order to set a new unique one. Sources of try-out combinations exist by manufacturer. Other easy-to-guess combinations include a birthdate, street address, or driver's license number.
Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spotface often takes the form of a very shallow counterbore. As mentioned above, the cutters that produce counterbores are often also called counterbores; sometimes, to avoid ambiguity, the term counterbore cutter is ...
A back countersink, also known as an inserted countersink, is a two piece countersink used on tough to reach areas. One component is a rod that is inserted into the existing hole in the workpieces; the other component is the cutter, which is attached to the rod, or extends out of it, after it is in position. [3]
Several companies in Austria, Italy, France and Belgium manufacture what is commonly known in North America as a Euro(pean) combination machine, which typically contains a sliding-table saw with a scoring blade, a shaper, a thicknesser, a jointer, and a mortiser. These machines generally have three motors, one for the table saw, one for the ...
A corded hammer drill next to a drill bit and a chuck key A hammer drill , also known as a percussion drill or impact drill , is a power tool used chiefly for drilling in hard materials. [ 1 ] [ 2 ] It is a type of rotary drill with an impact mechanism that generates a hammering motion.
A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...
A combination square is a multi-purpose measuring and marking tool used in metalworking, woodworking, and stonemasonry. It is composed of a rule and one or more interchangeable heads that can be attached to the rule. [1] [2] Other names for the tool include adjustable square, combo square, and sliding square.
Weight on bit [1] (WOB), as expressed in the oil industry, is the amount of downward force exerted on the drill bit and is normally measured in thousands of pounds.. Weight on bit is provided by drill collars, which are thick-walled tubular pieces machined from solid bars of steel, usually plain carbon steel but sometimes of nonmagnetic nickel-copper alloy or other nonmagnetic premium alloys.
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