LYMAN CASE HEAD SPACE GAUGEMade In the USA 243 WINCHESTER FEATURES: Caliber: . 243 Winchester Simply insert the case into the gauge to insure that it does not exceed the maximum or fall below the minimum allowable headspace the gauge witll identify a case which exceeds the max Caution: Any case found with excessive headspace should be destroyed immediately Dimension: 1. 40 X 2. 55 X 4. 45 Type: CASE LENGTH HEAD SPACE GAUGE Size: . 243 WINCHESTER Material: METAL