1. a unit of measurement equal to one thousandth of an inch
Usage: technical; engineering
2. a unit of angular measurement equal to one thousandth of a radian
Usage: military; technical

Examples

• The wire diameter is measured in mils.
• The coating thickness was only 2 mils.
• Artillery calculations use mils for precise targeting.
• The engineer specified a tolerance of 5 mils.
• Plastic film thickness is often given in mils.
• The sniper adjusted his scope by 3 mils.