Match instruments P: sine bar; Q: profilometer; R: vernier calliper; S: ring GO gauge, with applications 1: milled planar-surface roughness; 2: planar-surface inclination; 3: checking shaft-diameter tolerance without direct measurement; 4: length of a cuboid side.
A sine bar establishes an angle using gauge-block height. A profilometer measures surface texture. Vernier callipers directly measure lengths. A ring GO gauge checks a shaft limit by fit rather than reporting a diameter. Thus **P–2, Q–1, R–4, S–3: A**.
More Metrology and Inspection questions
GATE 2026 PI Q40– A student determines flatness and parallelism of a part’s top surface from the shown…
GATE 2026 PI Q54– A 2D stylus profilometer measures a 0.8 mm surface profile. The graph uses vertical…
GATE 2026 PI Q63– All sizes are mm. Hole limits are 22+0.018 +0.010 and shaft limits are 22+0.075 +0.004.…
GATE 2025 PI Q35– Hole dimensions are 30+0.04 -0.02 mm and shaft dimensions 30+0.06 +0.03 mm. Find maximum…
GATE 2025 PI Q61– A vernier’s zero lies between main divisions 20 and 21; its fourth division coincides with…
GATE 2024 PI Q57– A single-start metric thread has calculated pitch 1.4 mm from a two-wire pitch-diameter…