New instruments for collecting water samples and obtaining temperature information at any desired depth were developed.
Adjustable floats maintain the net at the desired depth, and lighted marker buoys are placed at intervals.
Smudge gently with a finger for desired depth and use a Q-tip to coax color into the lash line.
Once the desired depth is reached, the drill slowly bends until it becomes horizontal, for as much as another ten thousand feet.
Finally, the plate is submerged in an acid solution until the desired depth and width in the exposed areas is reached.
The Nautilus submerged by taking water into ballast tanks, and a horizontal "rudder"—a forerunner of the diving plane helped keep the craft at the desired depth.
In the cutting-out method a heavy laminated cardboard is used, and the cutout sections are simply peeled off to the desired depth.
The Clark-Bumpus sampler is a quantitative type designed to take an uncontaminated sample from any desired depth while simultaneously estimating the filtered volume of seawater.
According to Rosemary Lynch, executive director of the Atlantic Intracoastal Waterway Association, keeping the route passable and at the desired depth of 10 to 12 feet is a serious challenge, particularly in the northern segments.
Skilled film photographers are adept at using a ratio of shutter speed to aperture -- how wide the shutter opens, measured in f-stops -- to get the desired depth of field, the range over which the image will be in focus.
From it a tunnel was driven to a point directly under the twin peaks, from which a vertical shaft finally was driven to the desired depth below the peaks.
