Possible Clues:

• Clock mechanism
• Bolt gathered to secure new clock mechanism
• Timing mechanism spacemen utilised when trapped by alien
• Watch part of getaway with chaps getting caught finally
• Clock or watch mechanism
• Part of a watch, typewriter or piano
• Can't see MEP developing such a mechanism
• Part of watch South African fellows found in English street
• Get away from people, wanting time for piano piece
• MEP can't see new temporal regulator