Question

Which of the following is true for the measurement of taper ring gauges?

(a) Taper ring gauges of sizes above the diameter of 20 mm are best measured by inserting precision balls of different sizes in the gauge

(b) Taper ring gauges of sizes below the diameter of 20 mm are best measured by inserting precision balls of different sizes in the gauge

(c) Taper ring gauges of size equal to the diameter of 20 mm are best measured by inserting precision balls of different sizes in the gauge

(d) Taper ring gauges of all sizes are best measured by inserting precision balls of different sizes in the gauge

I got this question by my school principal while I was bunking the class.

My doubt is from Measurements of Limit Gauges topic in portion Testing and Calibration of Gauges and Dynamic Measurement of Engineering Metrology

Answer 1

Correct option is (b) Taper ring gauges of sizes below the diameter of 20 mm are best measured by inserting precision balls of different sizes in the gauge

For explanation I would say: Taper ring gauges of diameter below than 20 mm are best measured by inserting precision balls of different sizes in the gauge and the distance between the top of each ball and one of the end faces of the gauge is measured.