Limits, Fits and Tolerances Definitions | Metrology | GATE Mechanical

✔️ Limits – Maximum and minimum permissible size ✔️ Upper Limit & Lower Limit ✔️ Tolerance – Difference between upper and lower limits ✔️ Bi-lateral Tolerance – Variation on both sides of basic size ✔️ Unilateral Tolerance – Variation on one side only ✔️ Tolerance Accumulation – Combined effect of tolerances in assembly ✔️ Compound Tolerance – Overall tolerance in assembled parts ✔️ Deviation – Difference between basic size and actual size ✔️ Fundamental Deviation – Closest deviation to the zero line ✔️ Upper Deviation & Lower Deviation ✔️ Tolerance Grade (IT Grades) – Standard tolerance levels ✔️ Basic Size – Theoretical exact size ✔️ Zero Line – Reference line for deviations ✔️ Basic Hole System ✔️ Basic Shaft System GATE Mechanical SSC JE Mechanical RRB JE Mechanical Diploma & B.Tech Mechanical students Stay tuned for more concept-based lectures in the Metrology series. #metrology #limits #GATEMechanical #SSCJE #MechanicalEngineering