Related Clues:

• Assessment
• Kind of vision
• Graded item
• Type of tube
• Look inside?
• Beta version, e.g.
• Word with litmus or acid
• Class struggle?
• Interior shot?
• Tryout
• Surprise quiz found in the eight longest puzzle answers
• Dental-exam image
• Multiple-choice, e.g.
• Put out a feeler, maybe
• Revealing photo