Skip to content

Legal Metrology Resources

This page provides links to guidance, toolkits and other resources.
OPSS's enforcement and market surveillance activities from 1 April 2016 to 31 March 2018.
  1. NMRO
  2. Market Surveillance
OPSS guidance for businesses on the Weights and Measures (Packaged Goods) Regulations 2006.
  1. Packaged Goods
  2. Units of Measurement
  3. Weights and Measures (Packaged Goods) Regulations 2006
A framework for how regulators should engage with those they regulate.
  1. OPSS
NAWI, MID, and UK Certificates issued by NMO Technical Services.
  1. Certification Bodies
  2. NAWI
  3. NMO
  4. OIML
  5. Standards Calibration
Office for Product Safety and Standards (OPSS) guidance on the local authority notified body protocol.
  1. Stickers
  2. Verification
Office for Product Safety and Standards (OPSS) guidance for inspectors and manufacturers of weights and measures equipment.
  1. Automatic Catchweighing Machines
  2. Automatic Gravimetric Filling Instruments
  3. Automatic Rail Weighbridges
  4. Beltweighers
  5. Capacity Measures
  6. Cold Water Meters
  7. Intoxicating Liquor
  8. Length Measures
  9. Liquid Fuel
  10. NAWI
  11. Road Tankers
  12. Verification
United Kingdom Accreditation Service (UKAS) document on measurement uncertainty.
  1. UKAS
  2. Units of Measurement
Statement of the government’s policy on conformity assessment and accreditation.
  1. Conformity Assessment
Information on relevant details and requirements for public weighbridge operators.
  1. Public Weighbridges
International Bureau of Weights and Measures (BIPM) guidance to the expression of uncertainty of measurements.
  1. NPL
  2. Units of Measurement