PDFWAC 16-663-140
Identification of work—Labels and seals.
(1) Each registered service agent and serviceperson shall identify his/her work on commercially used weighing and measuring devices by:
(a) Applying an adhesive tag or label in a conspicuous location on the device; or
(b) Using a distinctive security seal or seal press impression.
(2) The adhesive tag or label shall legibly show at least the serviceperson registration number, business telephone number and date of service.
(3) Any security seal or seal press used to comply with subsection (1) of this section shall identify the individual registered serviceperson applying the seal.
(4) The registered service agent or serviceperson shall submit a copy of the tag or label, seal or seal press identification mark to the department at time of registration.