Related Clues:

• 90¡ angle
• Twelfth in a series of 26
• 90-degree-angle creator
• Old measure, about 45 inches
• Labor leader
• Letter-shaped pipe
• 90° turn
• Ninety-degree joint
• Addition, of a sort
• Right-angle shaped letter
• Angled building extension
• Pipe with a right angle
• Dogleg shape
• Right-angled pipe bend
• Plumber's union?