On Nivadas, the drilled-out section had the Nivada name. The member, who has had a number of vintage divers with depth gauge through his hands, has never seen one like mine. This is from looking at the "brevet" number on the case back and the theory is further strengthened by the fact that a section of the case back has been drilled out. Apparently, all Helvetia divers had a different case construction than mine and that the case construction belongs to a different watch, a Nivada. Watch the video above to see it in action.As I am currently selling a Helvetia dive watch with a built-in depth gauge, I have been approached by a member questioning the authenticity of it. SOPHISTICATED PRECISION Numerous tests and comparisons to dive computer readings have proven the depth gauge on the Oris Aquis to be remarkably accurate. Out of all the dive watch brands, the Oris Depth Gauge is highly respected and simply a timepiece of stunning innovative beauty. As you can see in the video, the counter-clockwise gauge around the dial adjusts from light to dark gray according to the diver’s depth below the surface. When the diver descends, water enters as the air inside the channel becomes compressed by the water pressure. The watch has a tubule inserted around the dial that has a tiny opening at 12 o’clock. This Swiss watch uses what it calls “Boyle Mariotte Law” which refers to the relationship between the pressure and volume of gas. SOPHISTICATED INNOVATION If you want a higher-end dive watch with depth gauge, take a look at the Oris Aquis Depth Gauge. Scratch resistant anti-reflective sapphire crystal.Black dial/ silver hands / Luminescent hands and markers.Case diameter: 46mm / Depth scale around outer rim.Unidirectional rotating silver-tone bezel with black ceramic top.Stainless steel case with a stainless steel bracelet.Features an excessive ascent rate alarm. ![]() Compass measures bearing in one degree increments even when tilted.Temperature function measures water temp in 0.1 degree celsius increments.Measures depth to 80m in 10 centimeter increments.Its durability is favoured by many involved in marine search and rescue activities. ![]() It features include water depth gauge, temperature reading and compass bearing. A comparable benefit of this watch is its solar powered rechargeable battery. Scuba dive watch computer backup… Many divers use this watch as a computer backup. The scratch-resistant display is easy-to-read and the buttons and features are easy to use. Described by one user as “… built to survive the end of the world…”! This is, without doubt, the best digital dive watch you could find.ĭespite its hardiness, it has a unique asymmetric shape that results in a comfortable fit. This shock-resistant watch is hailed for its robustness and resilience. As one diver commented recently, don’t forget a dive watch ‘tells the time’! Many dive computers do not show the time on their primary display. Some divers still do like to wear a mechanical watch however, whether it be for nostalgia, novelty or backup. Nowadays, dive computers are relatively inexpensive and provide a reliable method of measuring data essential to compute decompression limits at specific depths. Ascending too quickly can result in pain, severe illness or even fatal tragedy! Before the development of scuba diving computers, divers wore a dive watch, used a depth meter or gauge and used dive tables. Your body needs a precise amount of time to adjust when ascending from a dive. ![]() Both of these variables are essential to use decompression tables.įor scuba divers, it is vital to accurately compute decompression time. Divers need to be able to accurately monitor duration and depth underwater. Scuba diving is fun and recreational but never underestimate the dangers associated with this popular sport.
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