Ozzistraightshooter 3 point inside 
Micrometer for case neck measurements

Measure the actual inside diameter of the
cartridge case neck when reloading.

Choose correct neck sizing bushings and measure
spring back in case neck.

Measures in millimeters (<0.001 mm).

Comes with:
Calibration check ring.
Extension for measuring at greater depth, 
can measure chamber neck diameter down inside barrel.
Tools for fitting extension and calibrating.
protective case.

measures 6-8 mm so is suitable for popular 
calibers like .243, 6mm, 6.5, 30cal etc.

Better to use compared to pin gauges and
at an affordable price.

Made in China, but quality manufactured 
with 12 months warranty.