Rare diver vintage device leak tester USSR army RKU-2

Rare diver vintage device leak tester USSR army RKU-2. Tightness of the cavity of high pressure. Tightness of the cavity of low pressure. Resistance to inhalation and exhalation. Setting pressure of the reducer. Opening the safety valve. Tightness of the valve of the lung. If You have any questions. Europe and Asia 10-20 days. US… (read more)