Chainsaw
device · 1926 · Electric age
A saw with a cutting chain and an engine.
What it is made of
- Roller chain — has part. The cutting chain is a roller chain with teeth.
- Sprocket — has part. A sprocket drives the chain.
- Internal combustion engine — has part. A two-stroke engine.
Principles and materials it uses
- Steel — is made of. The chain and bar are steel.
History: what it evolved from and what it influenced
- Saw — evolved from. A mechanized saw.