Leveling And Bore Alignment 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.
When using the titling level what must you do before every shot?
Adjust the coincidence level.
Optical micrometers work by?
Refracting the light downward to the nearest known measurement.
Where should the tilting level be placed between the back sight and foresight?
Equal distance between them.
Which alignment procedure requires a light source and a second telescope?
Collimation
Which alignment procedure uses a target mounted in the end if a telescope?
Auto refraction.
Optical micrometers are capable of measurement to an accuracy of?
0.001 with out a vernier scale, 0.0001 with a vernier scale.
What is used to check the accuracy of a jig transit?
Wire weight held vertically.
Dynamic interruption in a laser system occurs when?
The beam falls outside the range if the detector while rotating.
Which is more accurate, auto collimation or auto reflection?
Auto collimation
What accessory is used to accurately align the centres in bearing bores?
Target holders
What is used in an alignment telescope or collimator to establish the tool is in a level position?
Coincidence striding level.
What is the purpose of the jig transit?
To align and establish precise vertical planes and plumb lines.
What is the purpose of tilting levels?
To establish a level plane and are use strictly for levelling procedures.
If done correctly wire alignment can be accurate up to?
0.0001 inch
Construction grade lasers are accurate up to?
1/4 in per 100 ft
