LINEAR MEASUREMENTS SUPPORTING TOOLS

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• Q1: Define Non-Precision Measurement.
  Ans: Non-precision measurement is a type of measurement in which accuracy is not very high and approximate values are obtained using simple instruments.
• Q2: What is Cast-Iron Surface Plate?
  Ans: A cast-iron surface plate is a flat metal plate made of cast iron used as a reference surface for inspection and layout work.
• Q3: State the purpose of Cast-Iron Surface Plate.
  Ans: Purpose is:

  • ➔ Used for marking and layout work
  • ➔ Provides a flat reference surface
  • ➔ Inspection of workpieces
• Q4: What is a Glass Surface Plate?
  Ans: A glass surface plate is a precision flat plate made of glass used for inspection and checking flatness.
• Q5: State the purpose of Glass Surface Plate.
  Ans: Purpose is:

  • ➔ Checking flatness of surfaces
  • ➔ Inspection work
  • ➔ High accuracy measurement reference
• Q6: What is a Granite Surface Plate?
  Ans: A granite surface plate is a precision flat plate made of granite used for high accuracy measurement and inspection.
• Q7: State the purpose of Granite Surface Plate.
  Ans: Purpose is:

  • ➔ Provides stable reference surface
  • ➔ Used in precision inspection
  • ➔ Used in calibration work
• Q8: What is a Straightedge Surface Plate?
  Ans: A straightedge surface plate is a long flat tool used to check the straightness of surfaces.
• Q9: State the purpose of Straightedge Surface Plate.
  Ans: Purpose is:

  • ➔ Checking straightness of surfaces
  • ➔ Alignment work
  • ➔ Inspection of long workpieces
• Q10: What is a Spirit Level?
  Ans: A spirit level is an instrument used to check whether a surface is horizontal or vertical using a bubble in liquid.
• Q11: State the purpose of Spirit Level.
  Ans: Purpose is:

  • ➔ Checking level of surfaces
  • ➔ Alignment work
  • ➔ Installation work
• Q12: What is an Engineer's Level?
  Ans: An engineer’s level is a precision instrument used for measuring differences in height between points.
• Q13: State the purpose of Engineer's Level.
  Ans: Purpose is:

  • ➔ Measuring height differences
  • ➔ Surveying work
  • ➔ Construction leveling
• Q14: What is an Engineer's Square?
  Ans: An engineer’s square is a tool used to check the squareness (90° angle) of surfaces.
• Q15: State the purpose of Engineer's Square.
  Ans: Purpose is:

  • ➔ Checking right angles
  • ➔ Inspection of workpieces
  • ➔ Marking work
• Q16: What is an Engineer's Parallel?
  Ans: An engineer’s parallel is a tool used to support and check parallelism of surfaces.
• Q17: State the purpose of Engineer's Parallel.
  Ans: Purpose is:

  • ➔ Checking parallel surfaces
  • ➔ Supporting workpieces during inspection
  • ➔ Alignment work
• Q18: What is the Universal Surface Gauge?
  Ans: A universal surface gauge is a precision marking tool used to mark and measure heights on a surface plate.
• Q19: State the purpose of Universal Surface Gauge.
  Ans: Purpose is:

  • ➔ Marking workpieces
  • ➔ Measuring heights
  • ➔ Layout work on surface plate
• Q20: What is a Collimeter?
  Ans: A collimeter is an optical instrument used to check alignment and angular errors with high precision.
• Q21: What is the Reversal Technique of Level?
  Ans: The reversal technique of level is a method in which the instrument is reversed to eliminate errors in leveling measurement.
• Q22: State the purpose of Reversal Technique of Level.
  Ans: Purpose is:

  • ➔ Eliminating instrument errors
  • ➔ Improving accuracy
  • ➔ Ensuring correct leveling results
• Q23: What is a Vee Block?
  Ans: A Vee block is a tool with a V-shaped groove used to hold cylindrical objects for inspection and machining.