Question

Which of the following is incorrect about feeler gauge?

(a) Feeler gauge can be used to check spark plug gaps

(b) A Feeler gauge has number of blades of equal thickness

(c) Blades are hinged in a sheath

(d) Each thin blade is inter-leaved between two thick blades

The question was asked during an interview.

My question comes from Feeler Gauges topic in division Linear Measurements of Engineering Metrology

Answer 1

Correct choice is (b) A Feeler gauge has number of blades of equal thickness

The best I can explain: A feeler gauge is used to check gaps and clearance between two surfaces like spark plugs and tappet clearance. A feeler gauge has a number of blades of different grades and thicknesses. For maximum protection, blades are assembled in a protective sheath.