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What is a backsight?

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Anonymous

9y ago
Updated: 11/10/2020

A backsight is the rear sight of a firearm.

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9y ago

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What is backsight in surveying terms?

In surveying, backsight refers to sighting a previously established point in order to orient the instrument before taking new measurements. This helps ensure accuracy and consistency in surveying work by referencing known points.


What is an intermediate sight in surveying?

On a typical boundary survey the instrument is sighted on a point from which angles will be measured, the backsight, and the next survey point where the instrument will be set up to continue the survey around the property, the foresight. Intermediate foresights, often "called sideshots," are points to which measurements are made other than the foresight or backsight. For example, a survey instrument is set up over a point. The horizontal angle on the instrument is set on 0 while sighting on a backsight point that may be a couple hundred feet away. A measurement will be taken to the foresight point which may also be a couple hundred feet away. There may be a survey marker near the point where the instrument is set up to which a measurement needs to be made. This measurement is called an intermediate foresight or a sideshot.


What is the datum point if the benchmark is 120feet the backsight to the benchmark is 7feet-3 1316 inches and the rod reading is 123.17feet?

Your H.I. is 127.69 FEET.127.69-123.17=4.52';Which is the foresight.I'm not familiar with the term data point in levelling.


What is equation for transferring elevations from one place to another?

To transfer elevations, BM + BS = HI - FS = Elevation BM - Benchmark BS - Backsight, or a measurement taken on a benchmark HI - height of the instrument FS - Foresight, or a measurement taken on an unknown point


What is called the reading on a leveling rod held of a point of known elevation?

The reading on a leveling rod held at a point of known elevation is called a backsight reading. This reading is used as a reference point to determine the elevation of other points during leveling surveys.


How do you calcuate height of instrument in surveying?

When surveying using a "level" instrument , the "level" instrument is set-up and adjusted to level by adjusting the screws. When surveying you have an instrument person and a rod person. When trying to find the height of the instrument, the rod person places there rod over a "known" elevation, either a benchmark or a temporary benchmark that has a known elevation. To get the height of the instrument, you need to "shoot" the level to the rod person holding the rod on the known elevation, this is called the "Backsight". This elevation will be read by the instrument person, and recorded in the survey field book. This value backsight elevation will then be added to the known elevation of the benchmark or the temporary benchmark, to get the height of instrument. HI = known elevation + BS Height


What are some nine letter words with 5th letter S and 6th letter I and 7th letter G?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern ----SIG--. That is, nine letter words with 5th letter S and 6th letter I and 7th letter G. In alphabetical order, they are: backsight bombsight codesigns foresight hindsight outasight oversight phansigar reassigns redesigns


What are some nine letter words with 2nd letter A and 3rd letter C and 7th letter G and 9th letter T?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -AC---G-T. That is, nine letter words with 2nd letter A and 3rd letter C and 7th letter G and 9th letter T. In alphabetical order, they are: backlight backsight jacklight


What are some nine letter words with 1st letter B and 4th letter K and 9th letter T?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern B--K----T. That is, nine letter words with 1st letter B and 4th letter K and 9th letter T. In alphabetical order, they are: backcourt backdraft backdropt backlight backsight backswept booklight booksiest buckwheat


What are some nine letter words with 3rd letter C and 4th letter K and 9th letter T?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 27 words with the pattern --CK----T. That is, nine letter words with 3rd letter C and 4th letter K and 9th letter T. In alphabetical order, they are: backcourt backdraft backdropt backlight backsight backswept buckwheat cockfight cockleert cocksfoot cocksiest dicktiest hackliest jackfruit jacklight jackshaft jacksmelt kickabout kickstart mockernut mucksweat nickpoint packsheet rockshaft sickliest tickliest wickedest


What are some nine letter words with 5th letter S and 6th letter I and 9th letter T?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 48 words with the pattern ----SI--T. That is, nine letter words with 5th letter S and 6th letter I and 9th letter T. In alphabetical order, they are: backsight ballsiest blousiest blowsiest bluesiest bombsight booksiest brassiest browsiest cheesiest choosiest classiest clumsiest cocksiest creasiest cutesiest dressiest drossiest drowsiest ecdysiast flimsiest flossiest folksiest foresight frowsiest gamesiest glassiest glossiest grassiest greasiest hearsiest hindsight limpsiest outasight oversight phrasiest primsiest prissiest queasiest rootsiest slimsiest teensiest transient tressiest uneasiest weensiest whimsiest woodsiest


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