If you use a gauge stick to collect tank data, the gauge stick must measure product to the nearest how?

• A. 1/4 inch
• B. 1/8 inch
• C. 1/2 inch
• D. 1/16 inch

Answer: (B)

In tank gauging, precision in reading the liquid level is essential for accurate inventory. Gauge sticks are designed with markings in eighths of an inch, so you record the product height to the nearest one-eighth of an inch. This resolution gives enough detail to convert height to volume reliably for typical tanks while keeping readings practical and less prone to human error. Using a larger increment, like a quarter inch, would introduce greater uncertainty in the calculated volume, especially in smaller tanks or near critical thresholds. A smaller increment, such as one-sixteenth inch, would be more precise but harder to read consistently and often doesn’t improve the practical accuracy for standard operations. Therefore, the measurement should be taken to the nearest one-eighth inch.