;Research* "The metrological triangle"* Recommendation of ICWM 1 (CI-2005);Pro-metric advocacy groups* The UK Metric Association* The US Metric Association;Pro-customary measures pressure groups
;Research* "The metrological triangle"* Recommendation of ICWM 1 (CI-2005);Pro-metric advocacy groups* The UK Metric Association* The US Metric Association;Pro-customary measures pressure groups