Designed to inspect the liquid level of Fire Suppression System Cylinders by Ultrasonic Waves. The unique Extension Rod allows the operator to test effectively for multi-bunked Cylinders, reaches 2nd, 3rd and 4th rows deep to make the measurement as quick as possible. The equipment is proven accurate to +/- 1.5mm and significantly safer and quicker solution when compared to weighing as a means of identifying cylinder content. RINA Classification Society Approved. UL-approved. NATO-approved. <Portamarine™> Designed specifically for testing multi-banked CO2 Cylinder in ships Fire Suppression System. It can be also used on FM200TM, NOVEC 1230TM, and variety of other clean agent systems. Carrying strap enables hands free operation for quick inspection. <Available in two variants Extension Rod.>*Standard marine Extension Rod – 20mm – ideal for the vast majority of applications and Standard spacing between cylinders *Mini-Extension Rod – 12mm – The compact, lightweight variant at only 14mm wide, able to work on even the most tightly packaged cylinder system