What condition should the standard block and gauge be kept in during measurement?

• A. Tilted
• B. Level and stable
• C. Loose and unstable
• D. Clean and dry

Answer: (B)

Keeping the standard block and gauge level and stable is essential for accurate measurement. When the setup is level, the reference surface is true horizontal, so the reading reflects the actual dimension without angle distortion. If the block or gauge is tilted, the angle introduces error into the measurement. If the setup is loose or unstable, the gauge can move during measurement, causing inconsistent readings. Clean and dry helps ensure proper seating and prevents slipping, but the primary factor for accuracy is being level and stable.