Make sure the baseline does not cross a restricted area.
Be familiar with the desired layout and the surrounding area.
Make sure to have at least three people helping with the taping process
Make sure the tent block is far enough away from the runway clear zone.
Be brightly colored, be perpendicular, and well lit.
Be well lit, be brightly colored, and be parallel.
Be brightly colored, be parallel, and well lit.
Be perpendicular, be brightly colored.
Tribrach, the electronic distance measurement (EDM) system, the electronic angle measurement system, and the microprocessor.
Telescope, the EDM, the electronic angle measurement system, and the microprocessor.
Tribrach, the EDM, the electronic angle measurement system, and the faceplate.
Tribrach, the EDM, the vertical circle system, and the microprocessor.
270o is oriented precisely upward in the opposite the direction of gravity.
90o is oriented precisely upward in the opposite the direction of gravity
90o is oriented precisely upward toward the zenith
0o is oriented precisely upward toward the zenith
Bottom plate is centered.
Optical plummet is centered
Adjustment posts are centered
Adjustment posts are tightened
Do not carry the instrument while it is mounted to the tripod.
Keep lenses and reflectors clean using lens paper or optic cloth
Carry the instrument by the telescope when not mounted to the tripod
Do not rotate the instrument by the handle when it is equipped with servo controls
Precision Measurement Equipment Commission (PMEC).
Precision Measurement Equipment Laboratory (PMEL)
Precision Measurement Equipment Authority (PMEA)
Precision Measurement Equipment Liaison (PMEL)
Rear station, current station, forward station.
Rear station, occupied station, forward station.
Back sight station, current station, fore sight station
Back sight station, occupied station, fore sight station.
Batteries can die and there should be a backup.
Survey notes in some circumstances can become legal documents
It can be confusing to keep track of all the numbers in a survey controller.
In case you lose track of where you left off on a survey from the previous day.
Horizontal collimation error.
Height of standards error
Circle graduation error
Light ray refraction
Unequal illumination of a target
Horizontal bending of light rays
Differential temperatures in the instrument
Verifying the location of one point based on another
Verifying the elevation of one point based on another
Establishing the location of one point based on another
Establishing the elevation of one point based on another
Dual axis compensator
Slowly rotate the level 360° to check for level
Slowly rotate the level 270° to check for level
Slowly rotate the level 90° to check for level
Rotate the level 90° to check for level.
A tangent screw
A focusing knob
A leveling adjustment
Single beam and visible line
Visible line and invisible line
Rotating beam and visible line
Single beam and rotating beam
Radio signal frequencies and satellite position at a given time
Satellite position and precise time the data left the satellite
Precise time the data left the satellite and radio signals
Location data and specific radio signal frequencies