Related Clues:

• Soft-boiler's need
• Scrabble accessory
• It may have sand in it
• Time-teller
• Remit for, say, measuring device - or the measurer (5)
• Clock, say
• If you send this up, watch it, perhaps
• Just watch how this may be a send-up
• Watch how you send up for this
• Send back the clock?
• An old one might be an antique clock
• Watch this and send it back
• That might make the century fast, but must not be fast
• Watch this. Send it back
• 5 down ran it up for a time