What is Auto level Machine? Components, Definition and Procedure.

What is the Auto Level Machine?

The Auto Level Machine is a leveling instrument utilized in studying. The convenience of the Auto level has made it well known among assessors. the significant focal points and disservices of the auto level are given beneath.

Auto Level Machine

The Auto Level Machine usually utilizes leveling instrument to find the points in the same even plane. It is additionally called automatic level or developer’s level. Heights of various points and distance between the points of the same rise can control via Auto level.


An automatic level otherwise called a self-leveling level or a manufacturer’s auto level is an expert device that can build up or checkpoints in a similar even plane. Manufacturers, project workers, designers, and land assessors utilize these optical levels to design constructions and improvements and guarantee primary sufficiency.


Principle of Auto level Machine

The automatic level has a compensator component that utilizes a blend of fixed crystals or mirrors and a moving crystal suspended on a pendulum to give a flat reference. 

When accurately set up the compensator will guarantee that the beam of light through the focal point of the reticule is actually flat.


Segments of Auto Level Machine

Auto level comprises the accompanying parts or segments

  • Telescope
  • Bubble tubes
  • Compass
  • Vertical axle
  • Leveling head
  • Tribrach screws
  • Tripod
  • Foot screws
  • Eyepiece
  • Objective focal point
  • Diaphragm
  • Focusing screw
  • Ray conceal



The telescope utilizes to notice the removed article through a view given by its game plan. When all said is done, the telescope fixes to the vertical axle of the Auto level so it tends to turn alongside the vertical shaft.


Air pocket tubes

Air pocket tubes give to check the level of the instrument. Two air pocket tubes give in a dumpy level that organizes opposite to one another on the highest point of the telescope. 

One cylinder is called a longitudinal air pocket tube and another is called a cross air pocket tube. The instrument supposes to be in a wonderful position when both the air pockets of the cylinders are at the focus or center of the cylinder.



Compass utilize to decide the attractive course of the line. If there should arise an occurrence of dumpy level, a roundabout compass gives simply under the telescope. 

What is Auto level? Components, Definition and Procedure.


The compass contains a pointer in it and readings are set apart inside it. The pointer is set to zero when it faces the north line from which the attractive orientation estimate.


Vertical shaft

The vertical shaft situates at the focal point of the entire instrument. The telescope pivoted even way as for vertical shaft. The instrument associate with the mount stands utilizing a vertical axle.


Leveling head

Leveling head additional called a trivet. It contains two three-sided molded plates which mastermind corresponding to one another. Three forests give at the three corners of the plates in which foot screws are upheld.



The Tribrach plate is corresponding to the leveling head or trivet. It associates with trivet by leveling screws or foot screws that change the tribrach plate. The flat level of the instrument is accomplished by changing this tribrach plate.



The stand utilize to help the entire leveling instrument on its top. It comprises three legs that move to the required position. The legs are of the same tallness and they might be strong or empty. 

Steel shoes give at the lower part of every leg to stand firm on the ground in a fixed situation.

What is Auto level? Components, Definition and Procedure.


Foot screws

Foot screws are given to direct the tribrach position and henceforth the instrument can level which is known by noticing the air pocket tube. The tribrach plates were brought down or raised utilizing foot screws. 

The situation of the tribrach supposes to be right when the air pocket in the air pocket tube is at the focus.



The eyepiece utilize by the onlooker’s eye to see the removed article. It contains amplifying glass which amplifies the noticing picture and furthermore the line of sight of the stomach. 

Thus, exact perusing can get. Raising eyepiece to utilize to see the typical picture which is, for the most part, rearranged by the target focal point.


Target focal point

Target focal points give at the opposite finish of the telescope. 

The target focal point comprises two sections, the forward portion comprises a curved sort focal point and the back part comprises an inward focal point. 

Along these lines, the picture acquired from the target focal point is constantly altered.



The stomach gives before the eyepiece. It contains focus made of dull metal which masterminds in amazing opposite positions. 

These lines of sight utilize by the eyepiece to separate the goal through the target perspective.


Centering screw

The centering screw utilize to change the concentration of the line of sight and the picture lucidity. The amplification of the eyepiece is overseen by this centering screw.


What is the RL of Autolevel looking over?

Relative level in looking over alludes to likening heights of study points concerning a typically expected datum

It is a vertical distance between the overview point and the received datum plane. Consequently, it considers as the base rise which utilizes as a reference to figure statures or profundities of other significant spots.


What is a minimal check of auto level?

The littlest estimation which estimates by an instrument is known as the least tally. The minimal tally of dumpy level relies upon the readings on staff. For the most part, we utilize 5 mm least tally staff, so the minimal check of the Auto level is 5mm. The minimal check of theodolite is 20(20 seconds).


Auto Level Setup

Arrange your stand as level as could expect, step on mount legs to crash into the ground.

Append auto-level to the stand.

Change level so the bubble focuses on the vial.

Customize presentation until focus is clear.

Switch the target focal point until the object you are locating is clear.



Care of Auto Levels

If the instrument becomes wet leave it unloaded. Wipe down instrument, spotless and dry vehicle case. Get together instrument just when it is completely dry. Never contact the glass with fingers, utilize a delicate clean build-up-free material to clean the focal point.


Checking Auto Level Machine  Accuracy

Set up the instrument in a territory that is however level as could expect and which seems to be around 220 feet in length. 

Spot two coordinating level bars or two bits of lashing in the ground around 200 feet separated with the points toward one another. 

Position and level the instrument so the separation from the instrument to every bar is a similar measure.


Take a perusing on every bar with the instrument (or imprint each piece of lashing where the crosshair is located).


Move travel to another spot on the line and take readings and imprint the two poles once more.


The distinction between the imprints on the bar will be the blunder of the instrument. The mistake should amend by a skilled fix professional.


Focal points of Auto level machine

Auto the level is not difficult to utilize.

No change for staff perusing need at an auto-level as the real perusing is seen from the eyepiece.

The air pocket can change from any side and any point with any 3 screws accessible.

The auto level has an inner compensator system that automatically changes the view.

The estimation precision of the auto level is higher.

Auto-level Machine outcomes are entirely solid.

Ease of utilization of auto-level sets aside time and cash.

The cost of the auto, level is low and moderate.


Drawbacks of Auto level Machine

Vertical points can’t be estimated.

The horizontal point is estimated in the auto level isn’t exact.


System of Dumpy Level Surveying

The system of dumpy level reviewing begins for certain impermanent changes which are:

Setting up of the instrument

Leveling up



Setting up of Dumpy Level

The instrument fix to the mount stand utilizing brace screws. Spread the stand legs and position the instrument at advantageous tallness. Right off the bat fix the two legs in the ground at a point and focusing on the air pocket in the air pocket tubes finish by changing the third leg.


Leveling up

The leveling up of an instrument finish utilizing foot screws or leveling screws. For this situation, the telescope organizes corresponding to any two leveling fastens, and the air pocket of the cylinder focus on by turning both the screws either inwards or outwards.


At the point when it focuses, at that point, the telescope turned 90o, and the third screw turned until the air pocket comes to focus. Rehash the cycle until the air pocket in the cylinder consistently remains at the center in any situation of the telescope.




Centering finish by changing the eyepiece and centering screw. The eyepiece change until the focus of the stomach is unmistakably noticeable. To dispose of the parallax blunder, white paper utilize to acquire a sharp vision of a line of sight.


The centering screw acclimates to see the unmistakable picture of the goal or staff. Centering is supposed to do when the line of sight cuts up the target or staff with clear vision.


After fulfillment of the above brief changes, presently it’s an ideal opportunity to take levels of required positions or points. The telescope pivots towards the line of objective or staff and separates it. The levels note at various points in which esteem choose from a realized seat mark point here. The subtleties are classified as underneath.

 So this is the most important machine of Engineering Surveying. If you like and help with this post please share this knowledge with your friends. Thanks for visit this blog.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

error: Content is protected !!