Multiple Choice Question (MCQ)

Question: What is the formula to find out core diameter of external thread by using prisms and micrometer?
A. Core dia = Measurement over prisms ? Height of prisms ? Single depth of thread
B. Core dia = Measurement over prisms ? Height of prisms + Two depth
C. Core dia = Measurement over prisms + Height of prisms ? Single depth
D. Core dia = Measurement over prisms ? Height of prisms + Single depth
Correct Answer: Core dia = Measurement over prisms ? Height of prisms ? Single depth of thread