No person shall sell any article or commodity which is commonly sold by weight or measure unless such article or commodity, at the time of such sale or purchase, is first weighed or measured by weights, measures, scales, beams, steelyards, platform scales or other machinery or appliances, utensils or receptacles tested, marked and sealed by the City Sealer of Weights and Measures as required by this chapter.
(1969 Code Sec. 97. 09)