Analox ATA ® - Trimix Analyzer w/ Flow Restrictor The Analox ATA™ is designed to be a true trimix analyzer, measuring the concentrations of Oxygen, Helium, and balance gas in your trimix. The compact Analox ATA has been designed to offer the highest levels of accuracy without compromising ease of use. The Dive Rite exclusive version is an exceptionally compact 2.0-inches deep. Features include:   Oxygen calibration and Helium zero-adjust Oxygen compensation for more accurate Helium readings Scroll-through backlit display of individual readings Power Requirements: One AA battery Battery Life: Approximately 50 hours Automatic switch-off after 15 minutes, preserves battery life after accidental turn on Price:$995.00 GM2735