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Due to their length and weight, which was typically at least 1.4 m (4 ft 7 in) and around 2 kg (4.4 lb), Zweihänders required two hands, as the name implies; as such they require at least 25 cm (9.8 in) for the hilt. [2] Zweihänders that were 4 kg (8.8 lb) in weight or more were confined to parade and ceremonial use. [citation needed]
A drawing from the Catalog of the Royal Armoury of Madrid by the medievalist Achille Jubinal in the 19th century. The original specimen was destroyed by a fire in 1884. The maquahuitl (Classical Nahuatl: māccuahuitl, other orthographic variants include mākkwawitl and mācquahuitl; plural māccuahuimeh), [4] a type of macana, was a common weapon used by the Aztec military forces and other ...
An example of the stainless steel Engineer's Ring issued by the Order of the Engineer The ring is worn on the little finger of the dominant hand.. The Engineer's Ring is a ring worn by members of the Order of the Engineer, an American fellowship of engineers who must be a certified Professional Engineer or graduated from an accredited engineering program (or be within one academic year of ...
An order from the engineering department (to be followed by the production department or vendor) overriding/superseding a detail on the drawing, which gets superseded with revised information. Also called by various other names, such as engineering change order (ECO), engineering change notice (ECN), drawing change notice (DCN), and so on.
Engineering fits are generally used as part of geometric dimensioning and tolerancing when a part or assembly is designed. In engineering terms, the "fit" is the clearance between two mating parts, and the size of this clearance determines whether the parts can, at one end of the spectrum, move or rotate independently from each other or, at the other end, are temporarily or permanently joined.
Basic diagram of an onager, a type of catapult. A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. [1]
The term "single-handed sword" or "one-handed sword" was coined to distinguish from "two-handed" or "hand-and-a-half" swords. "Single-handed sword" is used by Sir Walter Scott . [ 11 ] It is also used as a possible gloss of the obscure term tonsword by Nares (1822); [ 12 ] "one-handed sword" is somewhat later, recorded from c. 1850 .
The Obligation essentially states the duties and responsibilities of the engineer. Following the Obligation, the Iron Ring is placed on the little finger of the working hand, [3] and is worn by the engineer as a symbol and a reminder. As originally conceived, the engineer's iron ring rubs against the drawings and paper upon which the Engineer ...