Discover the rugged reliability of the 29mm Panel Mount Volt & Ammeter, designed for overlanders who demand precision and durability. Compatible with National Luna's 29mm diameter accessory line, this volt and ammeter measures 7-33V and 0-25A, making it an essential tool for monitoring your vehicle's electrical system. Easily integrate it with the Auxiliary Battery Box or 12V Auxiliary Distribution Box, or customize your setup with our flush and surface mount covers. Equip your adventure with the confidence of tested and proven performance.