Which term denotes higher precision requirements in drawings?

Which term denotes higher precision requirements in drawings?

• A. Tolerances
• B. Basic tolerances
• C. Maximum tolerances
• D. Tighter tolerances

Answer: (D)

The main idea is that precision requirements are shown by how tightly a dimension is allowed to vary. Tighter tolerances mean the part must be closer to the nominal size, which increases the precision the process and inspection must achieve. So the term that directly denotes higher precision requirements is tighter tolerances—the smaller the allowed variation, the higher the precision demanded. The other ideas are related to tolerances in general or to specific GD&T concepts and don’t by themselves indicate a higher level of precision.

The main idea is that precision requirements are shown by how tightly a dimension is allowed to vary. Tighter tolerances mean the part must be closer to the nominal size, which increases the precision the process and inspection must achieve. So the term that directly denotes higher precision requirements is tighter tolerances—the smaller the allowed variation, the higher the precision demanded. The other ideas are related to tolerances in general or to specific GD&T concepts and don’t by themselves indicate a higher level of precision.