Question

How many balls are needed in the method to check the angle of a tapered hole?

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked by my school teacher while I was bunking the class.

This interesting question is from Check the Angle of a Tapered Hole in division Miscellaneous Measurements (EM) of Engineering Metrology

Answer 1

Right answer is (b) 2

To explain: In the method of checking the angle of a tapered hole, there is a need for two balls. Depth gauge and height gauge are also required. This method is suitable for checking the angle of a tapered ring gauge.