Related Clues:
- They appear at one-yard intervals
- Pitch raisers, musically
- Soldier's service stripes
- Service stripes, informally
- Notes made by instrument on the Titanic, perhaps
- Note changers
- # # #, on music
- Needles, knives, etc
- Flats' counterparts
- Notes from instruments at the end of Schubert's First
- Quintet in B major
- Counterparts of flats, in music
- Medical waste collected in red containers