4.—(1) The Department shall provide for use by inspectors and maintain—
(a)such Northern Ireland working standards of such of the measures and weights set out in Schedule 1,
(b)such testing equipment, and
(c)such stamping equipment,
as the Department considers proper and sufficient for the efficient discharge by the inspectors of their functions.
(2) The Department may—
(a)provide a particular working standard or item of equipment as required by paragraph (1) by making arrangements with another person for the standard or item to be made available by him;
(b)make arrangements with another person for standards or equipment provided by the Department under paragraph (1) except stamping equipment, to be made available to the other person.
(3) Northern Ireland working standards and testing and stamping equipment provided under paragraph (1) shall be of such material and form as the Department may determine.
(4) A Northern Ireland working standard of a linear or capacity measure may—
(a)be provided either as a separate standard or by means of divisions marked on a standard of a larger measure; and
(b)either be marked in whole or in part with subdivisions representing any smaller unit of measurement or multiples or fractions of such a unit, or have no such markings;
as the Department may direct.
(5) Every Northern Ireland working standard, while it remains in use, shall have its value or values re-determined, at intervals not exceeding six months, by reference to such of the Northern Ireland local standards or such other Northern Ireland working standards as may appear to the Department to be appropriate.
(6) Every article used as testing equipment shall, at intervals not exceeding five years, have its accuracy re-determined in such manner as may appear to the Department to be appropriate; and for the purposes of this paragraph the Department may submit any such article to the Secretary of State for testing as to accuracy and for report under section 6 of the[F1 Act of 1985].