Geological Sample Marking Punch (Automatic)

One-handed precision marking for core samples and claim tags. Leave the heavy hammer and chisel in the truck. The Geological Sample Marking Punch is a heavy-duty, spring-loaded automatic punch designed for geologists and prospectors who need to mark physical locations on rock, metal claim tags, or core samples in the field.

Simply press the hardened steel tip against your material, and the internal spring mechanism delivers a high-impact strike to create a permanent dimple or marker. The tension is fully adjustable by twisting the cap, allowing you to switch from marking soft alloys (like aluminum tags) to hard geological matrices.

Key Features:

• Automatic Spring Action: Requires only one hand to use—no hammer needed.

• Adjustable Strike Tension: Twist the handle to customize the impact force for different rock densities.

• Hardened Steel Tip: Built to mark tough materials without blunting.

• Knurled Grip: Deep diamond knurling ensures the tool won’t slip out of sweaty or muddy hands.