Related Clues:

• Riding on
• See ___
• Higher
• At a higher level
• Give a saucepan a turn to get it to the summit
• The sort of board that is never crooked
• This board is straight
• ABCDEFGHIJKLMONP, perhaps, with nothing over it
• As one goes around, one cannot be like 10 across
• A revolver at work
• That was never 30 down
• Revolutionary at work?
• This would never be low
• It's revolutionary for a circus to have a big one
• Hire this, by the sound of it