What tools need to be prepared for diving?
Breathing tube - easy breathingFirst of all, when your water is resting or swimming, your face is looking down or looking for something in the water, you can breathe through the breathing tube to reduce the consumption of air in the cylinder. Second, when the surface of the water is rough, you can use the pipe height of the breathing pipe is usually higher than the height of the wave, so as not to let water into the mouth. Third, if you leave the boat or shore where water is out, and the air in the cylinder is running low, the breathing tube makes it easier for you to swim back to the ship or shore, and your face can be naturally placed in the water. While snorkeling, the breathing tube is necessary equipment, you can not look up in the water for a whole day. Have a try.The general design is an opening at one end of the breathing tube, the other end is a mouthpiece of the elbow. The upper respiratory tube (tube) is usually semi hard plastic tube, the lower part of the mouthpiece by silica gel. A suitable breathing tube should have a proper curvature (for your own face), about 2 centimeters in diameter, and 30~35 cm in length. The right breathing tube is easier to breathe than comfortable. The time of trial, it can be placed between the lips and teeth, the tube body on the left front of the ear, it should fit comfortably, do not damage the mouth or chin caused by fatigue, and containing is straight in the mouth.
Mirror - window of underwater worldTry to open your eyes in the water. You can see only a hazy picture, because the density of water is greater than that of the air, and the light will refract in the water. The focal length of the eye is adjusted according to the light in the air. Therefore, the surface mirror keeps the cavity in front of your eyes, so that you have a clear view. The biggest difference between a mirror and a swimming lens is that the front covers not only the eyes but also the nose, which is because the pressure in the nasal cavity needs to be balanced in order to prevent the extrusion. Therefore, swimming glasses can not be used for diving.The general surface mirror is composed of reinforced safety glass lenses, rubber or silica gel panels with a face fit and adjustable headband with fixed positions. Reinforced safety glass lenses prevent breakage of long, slender glass shards that are highly dangerous. The silicone material on the edge of the group is stronger than the rubber. This is because the silicone is 3-4 times more durable than the rubber and is not susceptible to skin irritation. It is softer and more comfortable. Some mirrors have a drain valve, which is a one-way valve for removing water from the mirror. The two most important things about choosing a mirror are fit and comfort, and so do other devices. An unsuitable facial mirror can leak water and may cause allergies and reduce the fun of scuba diving.
Light equipmentLight equipment refers to the mirror, breathing tube and fins - diving Sambo, you have a few pieces of equipment can be in snorkeling and scuba diving, you also need to have heavy equipment, refers to the device (BC), buoyancy regulating breathing regulator, diving instrument, cylinder etc.. Diving equipment has a myriad of styles and colors. You can choose equipment with different characteristics depending on the form, purpose, preferences and physical features of the dive.
