Leveling And Bore Alignment COPY Flashcards
What is flat?
May be level
May be flat on an incline
Same plane
What is plumb?
To align perpendicular to the horizon, vertical.
What is straight?
To be in direct line of. (Straightness)
What is square?
Refers to something that is aligned 90 degrees to a reference.
What is level?
To put in the same plane as the horizon.
Define refraction.
Bend the line of sight as it passes through glass. Light bends as it passes through different densities.
What prism will turn a line of sight precisely 90 degrees?
A pentaprism, a five sided prism.
What is the function of a tilting level?
To establish a level plane and are used strictly for levelling procedures.
What is the primary purpose if a jig transit?
To align and establish precise vertical planes and plumb lines. (Vertical readings)
What ins turner is used to measure angles with extremely high accuracy?
A theodolite, can measure angles in horizontal and vertical.
What is bucking in?
The process of aligning an optical tool onto two targets at the time. A precision lateral adjuster is required.
What is a plumb aligned bracket used for?
To set up an optical telescope quickly and easily to establish a vertical plumb line.
What is the function of the optical square?
To establish a plane perpendicular to the reference line of sight.
What is the proper term for the reference point?
Benchmark.
Why is roughy levelling important with a tilting level?
To ensure the coincidence level is within adjustment.
The rough alignment is getting the fisheye level.