Recently, while browsing amazon, I recognized a type, or pattern of pocket knife that was originally made for the US Army from 1917 to possibly the present day.
It was issued to the Linemen, or as we call them in the civilian world, Electricians.
Millions of the TL-29 pattern Lineman's Tool were made, and in the US, it's very common to see several versions, made by several knife companies on tables at gun & knife shows for very low prices
The TL-29 that I came across was $15 and made in China for a US Tool company called "Gardner-Bender".
The blade steel used is tempered Carbon Steel. One blade is a drop point/spear point blade style and the other is designed with a wire stripper slot at the base of the blade, and a slotted screwdriver on the tip of the blade.
The screwdriver straight edge blade has a liner lock, and the rest of the liner is made of brass.
This inexpensive pocket knife is built like a tank, and quite a nice classic jack knife style folding pocket knife.