Go/no-go gauges are not measurement tools, they only tell you that the thing being measured is between the go value and the no-go value.   The Superior Precision Headspace Gauge measures the distance from the chamber shoulder datum to the bolt face.

The Headspace Gauge is used in conjunction with the Superior Precision Cartridge Gauge and a quality 6” digital caliper or equivalent.

The Superior Precision Headspace Gauge is made of stainless steel.  Hex keys are provided.

Please visit the Library page for how-to videos and other documentation.

Patent Pending

Made in the USA

from domestic and imported materials