Any person owning, operating, or using any automatic or mechanical pump or liquid-measuring device for the purpose of measuring any liquid commodity to be sold or offered for sale within the Village shall provide proper tested standard measures, and shall each day before making the first scale in the morning, and always before commencing to sell a new supply of liquid, test the accuracy of the device so in use.
No person shall use such automatic or mechanical pump or device without first having obtained a certificate of approval from the Inspector of Weights and Measures as provided in Section 16-4 of this Code, nor shall any person use any such automatic or mechanical pump or device that is incorrect or defective.