Not sure where you are in Nevada, but you also need to comply with the local county and/or city ordinances. Since there is not a state preemption statute, Nevada counties and municipalities are free to enact knife laws which are more restrictive than state law. A few have done so. Those which have include Clark County and the cities of Las Vegas, North Las Vegas, Henderson, and Reno.
Clark County - Prohibits concealed knives with blades longer than three inches. No limitation on blade length for knives carried openly.
Las Vegas - Prohibits concealed knives with blades longer than three inches. Does not limit blade length for openly carried knives. Prohibits switchblades or automatic opening knives with blades of any length. Prohibits any person from loitering, fighting, or engaging in disorderly conduct while carrying a concealed "deadly weapon" as defined by city ordinance.
North Las Vegas - Prohibits concealed knives with blades longer than three inches. No limit on blade length for knives openly carried. Prohibits any switchblade or automatic opener, regardless of blade length. Prohibits the carry of ice picks or "similar sharp stabbing tools" and straight razors. Prohibits loitering, fighting, or disorderly conduct while carrying any concealed weapon.
Henderson - Prohibits concealed carry of knives with blades longer than three inches. Prohibits the possession of any knife "commonly known as a switchblade, spring-blade or push button knife," with no limitation on blade length.
Reno - Defines a "dangerous knife" as having a blade of more than two inches, and prohibits carry of same in any city park or recreation area. Prohibits, by city ordinance, the carry of any knife in a city courthouse.
State and National Parks: Nevada law does not specifically address carrying a knife within a state park, although NAC 407.105 does state that it is illegal to throw knives or other projectiles in state parks. As far as carrying a knife in any National Park, the only specific statute addressing this is 18 USC 44 § 930, prohibiting "dangerous weapons," which are understood to include knives, in any Federal park building, provided notice is given by means of a sign at the building entrance. Follow relevant state laws otherwise.