Related Clues:
- Guard marking time
- Observe - guard
- Observe - timepiece
- Keep an eye on — timepiece
- Scouting expedition
- Vigilant guard
- 'Check this out'
- Protect the border, in a way
- Police trap criminal with heart of gold
- Timekeeper
- Do guard duty
- Thunder Bay _____
- New rota in place for security guard
- Second-hand item?
- Keep the beat?