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Certificate of Approval of Weighing and Measuring (Pattern Approval) – Kenya

The Weights and Measures Service (also known as Legal Metrology Service) … 513, Laws of Kenya and the Trade Descriptions Act, Cap.505 Laws of Kenya, and … In Pattern/Type approval, one equipment of the same pattern is subjected


The pattern of weighing or measuring instrument is submitted by any person to the Director for approval in such manner as the Minister has prescribed.

The Director, on payment by that person of the fee prescribed, authorizes examination in the manner as he thinks fit the suitability for use for trade of instruments of that pattern, regarding in particular to the principle, materials and methods used or proposed to be used in its construction, and if the Director is satisfied that weighing or measuring instrument is suitable for use for trade then he issues a certificate of approval of that pattern and may from time to time thereafter authorize modifications as he may think fit.

Where a person submits a pattern of a weighing or measuring instrument to the Director as mentioned above, the Director may require the person to deposit with him the weighing or measuring instrument or parts of that pattern or model of such weighing or measuring instrument together with drawings of such weighing or measuring instrument or parts thereof.

The certificate of approval granted is granted subject to conditions as the Director may specify in the certificate of approval; and if any person, knowing that such a condition has been imposed with respect to any weighing or measuring instrument, uses or causes or permits any other person to use the same in contravention of that condition he shall be guilty of an offence, and the weighing or measuring instrument shall be liable to be forfeited.Ads by Google

Required Documents

  • Application letter addressed to the Director and indicating the model number of the equipment being submitted
  • The equipment being submitted for approval (where possible).
  • When the equipment is imported, certificate of approval/conformity of the equipment from the country of origin issued to the manufacturer of the equipment
  • Original technical user/operation manuals/brochures of the equipment being submitted for approval.
  • Appropriate approval fees in bankers cheque payable to Director, weights and measures. The fees are stipulated by Rule 239 of weights and measures Rules made under section 33 of the weights and measures Act. cap 513, Laws of kenya (L.N.107of 1999)
  • Any other document that the approving authority may reasonably request

Office Locations & Contacts

Licensing Body: Director of Weights & Measures
Physical Address: Weights and Measures complex, Popo Road, W&M off Mombasa Road
Postal Address: P.O.BOX 071-00100 Nairobi Kenya
City: Nairobi City County
Tel: +254-020-600653/604831
Email Address:
Operating Hours: 8.00 am-1.00 pm / 2.00 pm to 5.00pm
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Weighing and measuring instruments


  • Application Fee: Kshs. 10,000/= Electronic Kshs. 6,000/= Mechanic
  • License Fee: No Fee



Documents to Use

Application form Weight and measures, certificate of approval

Processing Time

Depends on nature and type of instrument


Agency: Director of Weights & Measures

Contact Office: Director Weights Measures. c/o In-Charge Technical Services

Resolution Criteria: All conditions must be met

Required Information

  • Name of the applicant
  • Weighing or measuring instrument submitted
  • Maximum capacity
  • Minimum capacity
  • Verification scale interval

Need for the Document

The Certificate of Approval of Weighing and Measuring officially agree or accepts as satisfactory the use of a weighing or measuring instrument in the Republic of Kenya.

Measuring instrument: includes every instrument for the measurement of length, area, volume, capacity and gauge.

Weighing instrument: includes all instruments constructed to calculate and indicate prices, compute wages, count or grade articles by use of weighing principles, together with all weights and counterpoises belonging thereto.

Weighing or measuring equipment: includes a weight, measure or a weighing or measuring instrument.

Information which might help

The Director may accept and adopt, with or without modifications, an approval issued by a competent authority in another country, of any pattern of a weighing or measuring instrument.

If any difference arises between an inspector and any other person as to the interpretation of any specification for the construction of prescribed weighing or measuring instruments under the Weights and Measures Act, that difference should, at the request of that other person, be referred to the Director whose decision thereon shall be final.

Other uses of the Document/Certificate

Ensure that all weighing and measuring instruments in trade are approved

External Links

Weights and Measures Act Chapter 513

Certificate of Approval of Weighing and Measuring (Pattern approval)Ads by Google


The Director, after consultation with such persons appearing to him to be interested as he thinks fit, may at any time revoke any certificate of authorization granted under this section, and shall cause notice of any such revocation to be published in the Gazette; and if any person knowing that the certificate of authorization has been revoked, and except as may be permitted by any fresh certificate of authorization granted in respect thereof, uses for trade or has in his possession or control for such use, or causes or permits any other person so to use, any weighing or measuring instrument of the pattern or incorporating the modification in question, or disposes of any weighing or measuring instrument to any other person in a state in which it could be so used without informing that other person of the revocation, he shall be guilty of an offence and the weighing or measuring instrument shall be liable to be forfeited.

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