Related Clues:

• Oil change unit
• Postal unit
• Pound fraction
• One of 16 in a pound
• Fraction of a pound
• Postal-scale marking
• Prevention unit?
• Avoidupois unit
• Slightest amount
• Wild cat
• 1/16 pound
• Gallon fraction
• Precious metal unit
• Smallish weight measurement
• Prevention amount?