Whatever knives you, I, or others on this forum know to be in reasonable compliance with the laws as written is of little importance to those who choose to enforce the laws as THEY see fit. Given sufficient articulation by a police officer or prosecutor, even a cutting instrument which is only marginally useful by design, function or size can be interpreted as illegal and therefore presumptively putting it's possessor in legal jeopardy. Think in terms of ~ how can a highly experienced anti-knife bureaucracy, by whatever means or methods, determine a knife or it's possessor to be in violation of law. That is the institutionalized mindset which unfortunately too many have confronted in New York City. Many without success. OldDude1