The stamp prescribed for use by inspectors for the stamping of weighing and measuring equipment which has been passed as fit for use for trade shall be—
(a) in the case of a stamp for the stamping of a measure made of glass, earthenware or enamelled metal, either a stamp in the form described in Schedule 1 to these Regulations or a stamp in the form described in Schedule 2 hereto;
(b) in the case of a stamp for the stamping of any other weighing or measuring equipment, a stamp in the form described in Schedule 2 hereto.