National Metrology Institute (NMI)


In line with its mandate and being the Custodian of National Measurement Standards, NMI, through high quality and traceable metrology services, supports competitiveness of Zimbabwean industrial products and services, fairness in trade, consumer protection, health and safety of human and animal life and protection of the environment. The institute provides traceable measurements and calibration services to private as well as public sectors of the economy. These services enable industries to compete on the global markets as well as meet statutory and contractual obligations.

Goals and Objectives

The National Metrology Institute shall provide its clients and stakeholders with metrology services that meet international standards. This shall be achieved through:

  • Delivery of accurate and traceable results consistently through calibrations using measurements standards with demonstrated equivalence to those of other recognised National and Internal Metrology Laboratories
  • Meeting all customer requirements, applicable regulatory, statutory and contractual requirements and relevant national/international standards.
  • Management’s commitment to implementing ISO/IEC 17025 requirements and those of the accreditation body.
  • Ensuring that our policies and procedures are documented, known, understood and implemented by all employees in executing their duties.
  • Sustaining technical competence of personnel through relevant training, intra- and inter-laboratory comparisons with peer laboratories.
  • The quest for continuous improvement in our business operations through formulation and review of objectives.

We are committed to ensuring that SIRDC’s National Metrology Institute signifies reliability, accuracy and competence.

NMI is currently divided into four major departments:

Mechanical Department:

  • Dimensional: Length Metrology; Angle Metrology; Surface Texture, Roundness, Roughness
  • Mass: Mass Metrology; Volume Metrology; Force Metrology; Pressure

Electrical Department:

  • DC and AC Metrology, Time and Frequency (T & F) Metrology, Resistance, Capacitance and inductance

Heat Department:

  • Temperature Metrology
  • Humidity Metrology
  • Heat Metrology

Chemical Department:

  • Primary and Certified Reference Materials
  • Gas Analysis and Gas Analysers
  • Calibration, Quality Control and Performance Test of Analytical Equipment


Current Research Areas

  • Thermometry project -Research into temperature measurement systems, i.e. Temperature controllers, indicators, sensors, etc.
  • Development of standard and certified reference materials.

  • Development of SpeedTesting Meters Calibration System.

Project Highlights

  • Establishment of measurement equivalence with peer laboratories in the region and globally through laboratory Inter-comparison, and proficiency testing.
  • Preparation of Calibration and Measurement Capabilities (CMCs) for registration in the International Bureau of Weights and Measures (BIPM) Key Comparison Database (KCDB).

Areas of Collaboration

  • Laboratory inter-comparison, proficiency testing and mutual recognition arrangements.
  • Staff professional development programmes

Products and Services

Calibration Services:

  • Mass and Volume

    Balances, Scales, Weights and (Micro Pipettes, Measuring Cylinders, Burettes), Volumetric (glassware), Moisture Testers, etc 

  • Pressure: 

    Pressure gauges, calibrators, transducers, etc

  • Dimensional: 

    Micrometers, vernier calipers, Gauge Blocks, Steel Rulers, Dial Gauges, Feeler Gauges, etc.

  • Electrical: 

    Calibrators, Multimeters, Ammeters, Voltmeters, Power Supplies, Frequency Counters, oscilloscopes, signal generators, Tachometers, etc.

  • Temperature: 

    Calibrators,Thermocouples, RTDs, LiGs, Temperature indicators, etc.

  • Sound:

    Sound level meters, sound calibrators, etc

  • Chemical: 

    Conductivity, pH and TDS Meters, Gas Analysis and Gas Analysers, UV-VIS, HPLC, AAS, (GC)-MS, FTIR, Viscometers, etc

  •  Light:

     Light meters, light calibrators, etc

Metrology Training:

  • General Metrology (including calibration); Temperature Metrology; Electrical DC Low Frequency Metrology; Mass and Volume Metrology; Evaluation and Expression of Uncertainty; Dimensional Metrology; Chemical Metrology; and tailor-made courses on request.

Consulatncy in:

  • Setting up a calibration system for ISO9001: 2000 and ISO 14000 Certification; Measurement, Calibration and Instrumentation Aspects; 

 Other Services

  • Installations and Commissioning

  • Servicing and repair of measuring instruments for local and international clients.


 International Membership

Zimbabwe through the National Metrology Institute (NMI) became an Associate of the General Conference on Weights and Measures (CGPM), which is the Secretariat of the Metre Convention (, on 14September 2010.

To fulfill the criteria for the CGPM Membership, the NMI had to establish a solid Quality Management System based on the ISO/IEC 17025 International Standard and requisite technical competence in various fields of metrology which were peer reviewed by technical experts from other National Metrology Institutes.

 International Recognition

On 4 January 2011, the National Metrology Institute (NMI) signed the International Committee of Weights and Measures (CIPM) Mutual Recognition Arrangement (MRA) The CIPM MRA is a Mutual Recognition, by all signatories to the arrangement of Measurement Standards used by the NMI as National Standards and it also recognises Calibration and Measurement Certificates issued by the NMI. 

Regional Membership

The National Metrology Institute is a member of the Intra-Africa Metrology System (AFRIMETS) and also a member of the SADC Cooperation on Measurement Traceability (SADCMET) 

Laboratory Accreditation

Four NMI Laboratories are accreditated as indicated in the table below by the South African National Accreditation System (SANAS) and the SADC Accreditation Service (SADCAS)/SANAS Twinning Partnership Arrangement.


 Laboratory Date of Accreditation   Accreditation Body  Remarks
 Mass  21 October 2011  SANAS 
 Dimensional 15 March 2012   SADCAS / SANAS  
Temperature 15 March 2012 SADCAS / SANAS 
Volume  16 May 2012  SADCAS / SANAS  

For Further Information Contact:
The Director, NMI
Tel: + 263-4-860346 (direct)