All bills presented by and on behalf of all public utilities providing steam, manufactured gas, natural gas, electric light, heat, power or water based on meter readings shall, before being honored, show the previous and current meter readings.

38 Del. Laws, c. 89; Code 1935, § ?4273; 26 Del. C. 1953, § ?168; 59 Del. Laws, c. 397, § ?1;