Related Clues:
- See 9
- See 8
- Archetypal invention with list
- A revolutionary invention the Incas never had
- Point cad's revolver
- 1 of 4 live to expound the tale
- Beale includes time for Harrison, say
- We'll hear revolver
- Roller with order for Rover
- Revolutionary invention!
- Cog
- The first technological invention?
- Circular structure on axle
- No need to re-invent it!
- Circular frame on axle