Correct option is A
A
bore gauge is specifically used to
measure the internal diameter of a hole. Bore gauges provide accurate measurements of cylindrical holes and are commonly used in engineering and machining applications. They can be mechanical (dial bore gauges) or telescoping gauges, and they require a micrometer or Vernier caliper to read the final measurement.
Types of Bore Gauges:
Dial Bore Gauge: Has a dial indicator to show small changes in the internal diameter.
Telescoping Gauge: Used to transfer the internal measurement to an external micrometer or caliper.
Small Hole Gauge: Used for smaller holes and bores.
Precision: Bore gauges provide highly accurate measurements up to 0.01 mm or better.
Applications: Used for checking engine cylinders, bushings, and bearings to ensure precision in internal diameters.
Feeler gauge
· A feeler gauge is a tool used to measure gap widths.
· Feeler gauges are mostly used in engineering to measure the clearance between two parts.
· They consist of a number of small lengths of steel of different thicknesses with measurements marked on each piece.
Screw pitch gauge:
It is used to determine the pitch of a thread. It is also used to compare the profile of threads.
