Cartridges -

The "tooth" or texture of the paper allows graphite and charcoal to adhere well.

From the 14th century through the mid-19th century, paper cartridges were the standard for military use. They consisted of a paper tube containing the projectile and the propellant. This technology was eventually superseded by the invention of self-contained metallic cartridges, which offered better protection against moisture and more reliable mechanical cycling in modern firearms. Modern enthusiasts often study these historical artifacts for museum curation or historical reenactment purposes. cartridges

Its durability makes it ideal for rough sketches and technical drawings. The "tooth" or texture of the paper allows