Dumbbell bar and stone tool: what they have in common

1. Step 1. Dumbbell bar — is part of — Dumbbell. A steel rod that serves as a handle.
2. Step 2. Dumbbell — is made of — Stone. Greek halteres were stone dumbbells.
3. Step 3. Stone — is material for — Adze. The blade of an adze was ground from stone.
4. Step 4. Adze — evolved from — Stone tool. Neolithic adzes were stone.

Open Evothings