BORING - Practice Mode

1) What are the standard diameters of tool maker's button?
Correct Answer: 8mm, 10mm, 12mm
2) Which thread is more suitable to hold the tool maker button in position?
Correct Answer: 4BA thread
3) Which material is used to make the tool maker's button?
Correct Answer: Hardened steel
4) What is the maximum size of bore that can be checked with telescopic gauge?
Correct Answer: 152.4 mm
5) What is the minimum size of bore that can be checked with telescopic gauge?
Correct Answer: 12.7 mm