O.A.L. stands for Overall Length. This is measured from the base of the cartridge to the tip of the bullet. It is how long the finished cartridge is with the bullet inside of the case. Affordability and reliability comes to mind when using the accurate Balistix Pro OAL Gauge.
Aluminium design
Comes with inserts for calibers: 224, 243, 264, 284, 308
Includes tap to easily tap a single case to modify it for easy use in the OAL Gauge