Code of Federal Regulations Title 7. Agriculture § 7.56.17 Equipment and facilities for graders

(a)(1) An accurate metal stem thermometer;

(2) Electronic digital-display scales graduated in increments of 1/10 –ounce or less for weighing individual eggs and test weights for calibrating such scales. Plants packing product based on metric weight must provide scales graduated in increments of 1–gram or less;

(3) Electronic digital-display scales graduated in increments of 1/4 –ounce or less for weighing the lightest and heaviest consumer packages packed in the plant and test weights for calibrating such scales;

(4) Scales graduated in increments of 1/4 –pound or less for weighing shipping containers and test weights for calibrating such scales;

(5) Two candling lights that provide a sufficient combined illumination through both the aperture and downward through the bottom to facilitate accurate interior and exterior quality determinations.

(6) A candling booth adequately darkened and located in close proximity to the work area that is reasonably free of excessive noise. The booth must be sufficient in size to accommodate two graders, two candling lights, and other necessary grading equipment.