TekTips

Frameless vs. Frame:The lenses in frameless designs will sit closer to your eyes offering a little wider field of vision in all directions. Frameless designs are also typically lower volume than rigid frame designs. The lack of a thick rigid frame means frameless styles can be folded up very flat and easily stowed in a pocket ...

Every piece of equipment in the hogarthian configuration has been considered in a synergistic relationship to every other, resulting in a configuration where carefully selected components along with the skills of the diver are integrated into a complete system. Adopted by exploration divers of all types, many expert divers view ...

We usually hear this from divers who have always worn a jacket style BC, and we'd like to point out that it's irrelevant. It's true, the US Coast Guard requires an approved wearable Personal Floatation Device (PFD) to float the unconscious victim face up in the water. But a Buoyancy Control Device (BCD) for scuba divers is not ...

Using the metal grommets, the DGX sleeve can easily be attached to the bottom or sides of any standard metal backplate using assembly screws or attached to the Transpac using medium quick links or the pear shaped quick links. We find that for this application, the plastic assembly screws work just as well as the metal versions ...

The red-and-white U.S. dive flag was invented in the early 1950's by Denzel James "Doc" Dockery. In 1953, he followed instructions published in Popular Science Magazine for building his own scuba device, and began experimenting with ways to make a living by working in the emerging sport. In the course of his work, Dockery found ...

If you are an open circuit diver, it is becoming increasingly common to find yourself on a boat with a rebreather diver; or perhaps you may even get assigned a rebreather diver as a buddy. Like you, the rebreather diver has been trained to do a few minutes of setup and checks on their equipment before they dive. Often, another ...

A typical sport diving breathing gas setup consists of a pressurized gas cylinder (aka 'tank') and valve with either a 'Yoke' or 'DIN' outlet. The yoke valve outlet is by far more common in the US and Caribbean but much of the rest of the world uses the DIN valve outlet. Experienced divers have a strong preference for DIN, ...

The internal structure of the fixed port design allows for a very direct gas flow through the first stage, providing optimal performance. The fixed port design is also typically the most compact as well as being lower cost when compared to a similar swivel turret design. The most common objection to the swivel design is that it ...

SPGs for diving are available with an aviation style face similar to the altimeter pictured at right. This type of face was adopted when aircraft began flying night missions and the instrumentation needed to be illuminated. A large expanse of white on the instrument panel reflected too much light, impacting night vision and ...

A common misconception among divers is that stainless steel does not corrode at all. There are various types of stainless steel, each with different corrosion properties, that make a specific grade more or less suited to a particular application. Because there is no perfect stainless steel, the selection of the grade is often a ...