Lemon: 5.397 cm diameter. USDA SR Legacy, NDB 09150: fruit (2-1/8 inch diameter). Selected dimension converted from inches using 2.54 cm per inch. Across the widest part of the food, excluding any stem or leaves.
Lime: 5.08 cm diameter. USDA SR Legacy, NDB 09159: fruit (2" dia). Portion reference, not a universal average; 1 inch = 2.54 cm. Across the full food outline on the indicated axis; stems and foliage are excluded.
Dinner Roll: 6.35 cm diameter. USDA SR Legacy, NDB 18344: roll (2-1/2" dia). Portion reference, not a universal average; 1 inch = 2.54 cm. Full outer diameter in the labelled top view; the reused disk shows the measurement, not surface texture.
Blueberry Muffin: 6.985 cm diameter. USDA SR Legacy, NDB 18274: small (2-3/4" dia x 2"). Portion reference, not a universal average; 1 inch = 2.54 cm. Full outside diameter across the centre, not slice thickness.
Angel Food Cake: 22.86 cm diameter. USDA SR Legacy, NDB 18086: cake (9" dia x 4"). Portion reference, not a universal average; 1 inch = 2.54 cm. Full outside diameter across the centre, not slice thickness.
