Lyman Rifle Case Length Headspace Gauge 350 Legend Silver. These Reloading Equipment from Lyman have built-in memory so you don't have to worry about the gauge getting stuck in the case and it will identify if the case exceeds the maximum or minimum allowable headspace. These Lyman Rifle Headspace Gauges can be calibrated for specific ammo or you can use it as a reference for cases that exceed the maximum allowable case length. Lyman Rifle Headspace Bottleneck Case Gauges are easy to use - simply place the case in the gauge and both the minimum and maximum headspace measurements will register. In addition this gauge will identify a case that exceeds the maximum allowable case length. Ensure the highest level of safety and accuracy with every shot you take by using these Lyman Rifle Headspace/Case Gauges. Specifications for Lyman Rifle Case Length Headspace Gauges: Manufacturer: Lyman Quantity: 1 Weight: 8 oz Color: Silver Package Contents: Lyman Rifle Case Length Headspace Gauges Lyman 7990338: Rifle Case Length Headspace Gauge 350 Legend Silver