SUV and chisel: what they have in common

1. Step 1. SUV — has part — Suspension. Long-travel suspension.
2. Step 2. Suspension — has part — Shock absorber. Shock absorbers are part of the suspension.
3. Step 3. Shock absorber — has part — Piston. Inside, a piston moves in oil.
4. Step 4. Piston — is part of — Rock drill. A percussion piston.
5. Step 5. Rock drill — is used in — Tunnel. Driving the Mont Cenis tunnel.
6. Step 6. Tunnel — uses — Chisel. Hezekiah’s Tunnel was cut by hand with chisels.

Open Evothings