As a line-of-sight instrument, these tools provide data on displacement magnitudes and rates, but not true direction hence limiting their use in gaining understanding of the kinematics and behavior of the moving slope.
The ancient Egyptians were skilled builders; using simple but effective tools and sighting instruments, architects could build large stone structures with accuracy and precision.
If you are not using a bolt-action rifle, you can insert a collimator, which is a bore-sighting instrument, into the end of the barrel to continue bore-sighting the rifle.
Cells were stained with Trypan Blue Solution (Hyclone, Logan, UT) and imaged at 4× magnification via Nikon Eclipse TS 100 and Nikon Digital Sight (Nikon Instruments, Inc).
Because it is impossible to sight through the instrument and look at the compass card simultaneously, a prism (mirror) is positioned to reflect an image of the card, which is given a second set of graduations with reversed figures.
However, the limited space and high magnification involved in minimally invasive surgery can also cause surgeons to lose sight of an instrument.
"But then an official spots their tuba or their cello or their paintbrushes and says, 'You're working, get back on the plane.' " Musicians say the mere sight of their instruments provokes instant skepticism at the border.
The system is capable of elemental analysis with no previous preparation and in near real time, with the only requirement of a free line-of-sight between the instrument and the sample.
The surgeon also loses sight of the instruments when they are exchanged through the body [ 33].
"We hope you like banjo!" Since there were five of them on stage, and no other instrument in sight, Abigail Washburn's opening salvo seemed reasonable.
