Every boiler which has been inspected by the division shall be numbered either by stamping the number upon the boiler or by attaching a numbered metal tag by a seal or otherwise to the boiler or its fittings. No person except an inspector of the division shall deface or remove any such number or tag.
Mass. Gen. Laws ch. 146, § 24
Numbering, stamping or tagging boiler; defacement or removal of number
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.