Bottle opener capacity. A specific style of bottle opener is known as a churchkey. Invented at the same time as the crown cork, it is the original bottle opener. But as well as being portable it also comes as a fixed device to be attached to vertical surfaces, often with a tray to catch the bottle tops. It does not open wine bottles. It is class 2 fulcrum type. A simple opener is a piece of metal with a rectangular or rounded opening in one end and a solid handle large enough to be gripped between the thumb and forefingers on the
Can opener military designations for the P-38 include "US Army pocket can opener" and "Opener, can, hand, folding, type I". As with some other military terms (e.g., "jeep"), the origin of the term is not known with certainty. The P-38 and P-51 openers share a designation with the Lockheed P-38 Lightning and North American P-51 Mustang fighters, however this is coincidental. The most likely origin of the name is much more pedestrian; the P-38 and P-51 measure and in length respectively. P-38s are no longer used for individual rations by the United States Armed Forces, as canned C-rations were replaced by soft-pack