Watch waterproof testing tool, watch case resistance and pressure testing machine

Features 1. It is convenient for you to observe which part of the watch is not water proof with the transparent cylinder. 2. Designed for testing the water resistance of the watch cases. 3. Can test two watches at one time. 4. Easy for you to operate. 5. It is a great accessory for watchmaker and watch repairing. Specification Features:  1. It is convenient for you to observe which part of the watch is not water proof with the transparent cylinder. 2. Designed for testing the water resistance of the watch cases. 3. Can test two watches at one time. 4. Easy for you to operate. 5. It is a great accessory for watchmaker and watch repairing. Specification: Material: Alloy Color: Shown As Pictures Capacity: 2Watches Maximum Test Height: 15.5cm/6.1in Maximum Test Width: Approx. 7cm / 2.8in External Air Pressure Connection: 6N Pressure Test Range: 0.3-6.0bar Cylinder Maximum Pressure: 10 bar Size: Approx. 240 * 145 * 275mm/9.5 * 5.7 * 10.8in Package List: 1 * Watch Waterproof Tester Usage: 1. Fill the water tank to the specified level. Distilled water is preferred to prevent calcium deposition. 2. Hang the watch on the hook. 3. Replace the cover and tighten through 2 nuts. 4. Use the lever to increase the pressure to 3 atmospheres (according to the official standard of watch industry) and wait 3 minutes to watch the air inside. 5. Press the button to let the air escape immediately. When the pressure drops, observe the watch: if almost no bubbles escape from the shell, it is obvious that the sealing is not good for escape.In this case, please get the watch out from the water. How to Use Operating Instructions: (1) Place the watch test machine on a stable countertop and check that the exhaust valve is closed. (2) Loosen the two screws at the top and remove the transparent test cover.  (3) Pour in sufficient water to reach the red line mark position inside the product (it is recommended to use distilled water or purified water to avoid using tap water, which may cause calcium precipitation and affect observation and equipment lifespan). Hang the watch on the hanging rod mark, put the cover back on and tighten the screws.  (4) Slowly shake the pressure rod and observe the pointer of the pressure gauge: In the 0→1 pressure range, the force is relatively light; in the 1→2 pressure range, the force gradually increases, which is normal; in the 2→3 pressure range, the shaking force should be increased and maintained at a constant speed until the pointer points to 0.3 (i.e., 3 pressure).  (5) After reaching a pressure of 3, maintain the pressure for three minutes to allow sufficient air to enter the interior of the watch.  (6) Press the suspension rod, immerse the watch in water, and then press the exhaust button to slowly release the pressure.  (7) During the pressure relief process, observe whether there are any bubbles emerging around the watch: bubbles indicate poor sealing. Quickly pull the suspension rod and take out the watch. The absence of bubbles indicates good sealing.  (8)After the test is completed, open the exhaust valve to release all the residual pressure, remove the cover to drain the water and dry the equipment.  (9) Note: It is a normal