(1) For the purp ose of verifying the / correctness of the working standa rds , the Sta te Government m ay cause to be pre pared at the Mint as man y sets o f au the nt ica ted sta nd ard weights and measures as it may deem necessary to be calle d the second ary standard s.
(2) The secondary standard s shall be made of such ma ter ial and according to such design and specifications as m ay be prescribed and shall be stam ped and authe nti ca ted by such person or autho rity as the Cen tral Government may d irect.
(3) Th e secondary sta ndard s shall be kept at such places , in such custody an d in such ma nner as may be prescribed.
(4) A secondary sta ndard shall be verified with the reference sta ndard at leas t once i n every period of five years and shall be marked with the d ate of veri ficat ion in the prescribed manner by such person or authority as the State Government may direct.
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(5) A secondary sta ndard which is not so verified an d marked within the aforesaid period shall not be deemed legal an d shall not be used for the purposes of this Ac t.