Study of various parts of auto level

4. Front Face of Auto Level

Objective Lens

Focusing Screw

Leveling Foot Screws

Bubble Tubes

• Objective Lens: It is kept towards the object (leveling staff) to receive rays into telescopic tube.
   
• Focusing Screw: It is used to focus the leveling staff in order to read the graduations.
   
• Leveling Foot Screws: These are used to make the base of the instrument.
  

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