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'''Fold number''' refers to how many [[double fold (paper testing)|double folds]] that are required to cause rupture of a paper test piece under standardized conditions. Fold number is definied in ISO 5626:1993 as the [[antilogarithm]] of the mean folding endurance:<ref>ISO 5626:1993 Paper &ndash; Determination of folding endurance, 3.3</ref>
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<math>f=\text{antilog}_{10} \frac{\textstyle\sum_{i=1}^n F_i}{n}=10^{\frac{\textstyle\sum_{i=1}^n F_i}{n}}</math>
 
where ''f'' is the fold number, ''F<sub>i</sub>'' is the folding endurance for each test piece and ''n'' is total number of test pieces used.
 
In the introduction of ISO 5626:1993 it is emphasized that fold number, as defined in that very International Standard, does not equal the mean number of double folds observed. The latter is however still the definition used in some countries.<ref>ISO 5626:1993 Paper &ndash; Determination of folding endurance, Introduction</ref> If the numerical value of the folding endurance is not rounded off, these will however be equal.
 
In the former Swedish standard SS 152005 ("Pappersordlista") from 1992, with paper related terms defined in Swedish and English, fold number is explained as "the number of double folds which a test strip withstands under specified conditions before a break occurs in the strip" &ndash; that is, ''not'' the antilogarithm of the mean folding endurance.
 
==See also==
*[[Folding endurance]]
*[[Double fold (paper testing)]]
 
==References==
<references/>
 
{{Paper}}
 
{{DEFAULTSORT:Fold Number}}
[[Category:Paper]]

Revision as of 18:50, 27 February 2014



Contrary to what quite a few think, not every single knife can make it to the list of ought to-haves for a devoted knives collector—it takes a thing special, an aura that inspires the enthusiasm for owning a knife. Fixed blade knives have usually engaged consideration with their wide array of designs which includes selections of handles, blades, and finishing hues.

The multitool (Leatherman is the very best identified brand) has a lot of uses. Most models come with an array of blades, screwdrivers, pliers, wire cutters and so forth. for fixing a wide selection of things. Nonetheless, they are usually not developed with camping in mind. The knife blades have a tendency to be smaller and narrow, which means that they are not suited to challenging jobs. A lot of of the other tools (screwdrivers come to thoughts) are unlikely to be necessary on a camping or hiking trip. These tactical knives are quick to carry and deploy. These are normally backup knives are normally treated as the final line of defence. Nonetheless, this doesn't imply that these are inferior excellent rather you would want your last resort to be the strongest. Wonderful Knife Normal camper - JUL 16, 2013 Doug's Knives

G10 – This compound is a fiberglass combined with resin and hardened in extreme temperature to generate a lightweight and tough deal with. It can be shaped into lots of diverse types and is most frequently found on tactical knives. Micarta – This material appears better than G10 aesthetically and is developed in extremely a great deal the similar way by soaking components like paper, canvas or cloth in resin. They generally are obtainable on more pricey knives but it recognized for being sturdy and waterproof. Back Lock or Lockback – Using a hook, the arm moves underneath the pivot. When this hook is moved then blade can lock open. It is a very common kind of lock which is made use of on some classics by Buck and other suppliers. This is a equivalent lock to the mid lock. Quantity of blades

Ring Lock – Although you may perhaps not see as numerous ring locks, they are nevertheless incredibly straightforward to use and sturdy as a locking mechanism. It differs in that you twist a ring if you want to open the knife. When the ring is twisted the knife can be folded into the gap and locked by twisting additional. Then to close the blade just do the opposite by twisting the ring folding the blade down and twisting yet once again. They have been popular amongst producers for their inexpensive expense in generating the ring lock If you treasured this article and you would like to acquire more info about www.thebestpocketknifereviews.com kindly visit our own website. .