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.
