Nemo Underwater V2 Divers Edition Drill - 50M (Two 6Ah Batteries) Underwater Chipping Hammer your sensor has a range

your sensor has a range of 0-50 ppm or 0-300 ppm

Neck Ring 1 510-481 O-ring 1 510-490 O-ring 2 510-550 Valve

Regulator:

This nose block device will fit most helmets and bandmasks

Set at 300 psi (20

Nemo Underwater V2 Divers Edition Drill - 50M (Two 6Ah Batteries) Underwater Chipping Hammer your sensor has a rangeThe Nemo V2 Divers Edition Drill is the world's first submersible cordless drill, designed for commercial, scientific, and research divers. Having a submersible cordless drill allows users to complete a variety of tasks underwater from tagging coral reefs for research to cleaning barnacles off of boats and yachts. The drill boasts a salt water resistant black and red paint job and comes with a durable carrying case, battery charger, pressure valve,