A pantographic knife (sometimes referred to as a parachute knife) is a folding knife whose blade is opened by a scissors method (kind of like a balisong... | By Blade Magazine | Facebook
German Pantographic - Paratrooper Knife - Retro Knives - YouTube
Gravity Knife: A Wartime Souvenir - The Tank Museum
German WWII Luftwaffe Paratrooper Gravity Knife | Gettysburg Museum
Sold at Auction: WWII GERMAN WAFFEN SS PARATROOPER FOLDING KNIFE