roller that has teeth on the rims to pull film or paper through
thin wheel with teeth that engage with a chain
[ Syn: sprocket wheel ]
tooth on the rim of gear wheel
[ Syn: cog ]
roller that has teeth on the rims to pull film or paper through
thin wheel with teeth that engage with a chain
[ Syn: sprocket wheel ]
tooth on the rim of gear wheel
[ Syn: cog ]