Legal blade length?

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Jan 31, 2008
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In the US, when blade length is measured, it is the cutting edge, and not the entire metal that makes the edge, right? I just want to make sure I'm absolutely clear about this. And if this is true, then it would be legal to have a knife that is say an inch of cutting edge, but the entire thing being four or five inches?
 
Different jurisdictions define it differently, so you'd be well-advised to check on the laws where you live. But in my experience, most U.S. laws define is as "from the hilt to the tip."

Good luck.
 
how one measures blade length is open to interpretation.

i've yet to read a law that specifically states how a blade should be measured.

cutting edge?
tip to scale?

there are valid arguments for both.
 
Normally, blades are measured from the handle (or guard) to the tip. The allowed lengths vary greatly by location.
 
If there's a length limit, you'd best be measuring in a way that gives you the biggest number possible, because that's probably how they'll do it!
 
just an FYI, CT state law clearly states that is is the "cutting edge" that is being measured. which is the best scenario... i always wonder if they would follow the curve (like with a fabric ruler) or use some sort of straight edge. if that is the case, then couldnt a pizza cutter be a dangerous weapon, because you would have to measure along the circumference of the whole thing? lol the things i think of...
 
Unless a law (like Connecticut's) Specifies "edged portion", it is safest to presume that they will measure the entire blade- including the unedged portion if any.

In New York City, where the law generally prohibits carry knives with 4"+ blades. It does not specify what should be considered in determining that length. An individual was charged and convicted of an administrative code violation for carrying a knife that had a blade that had a <4" edge but was greater than 4" overall. He appealed the conviction and lost. The court held that the overall length of the blade is what the law intended to consider.

The American Knife and Tool Association recommends use of the tip to scale method. However, if the law doesn't specify otherwise, it wouldn't be out of the realm of possibility if an officer measured along the curve if the law didn't specify how the blade should be measured.
 
There was a case in Texas a few years back that addressed this issue. The court determined that it was the total blade length and not the cutting edge that counted when measuring for the 5.5 inch rule.
 
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