Thanks Misant for the relevant information. I think it's tough to find information about that on the internet. It's not clear. I've heard that the blade shouldn't exceed the width of the palm of your hand but I think this is a law for the Scout that became popular.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.