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+353 45 896660 or email us!




Weights and masses in compliance with OIML R111

Zwiebel is one of the World’s leading manufacturers of precision weights and masses that comply with the international R111-2004 recommendation of the International Organisation for Legal Metrology (OIML). Zwiebel laboratories are COFRAC accredited (2-1218), issuing COFRAC certificates of calibration that cover the basic reporting of conventional mass correction, uncertainty and traceability information.

Weights and masses are made from stainless steel, brass or cast iron and are available from 0.1 mg to 2 tonnes in every class of precision (E0 to M3), being specified in sectors that include Aeronautics, the Food Industry, Chemicals and Pharmaceuticals.

ZWIEBEL is also there to assist you in defining, studying and producing your specific weights and masses.

Our experience enables us to propose any type of material, shape and composition, finish, tolerance, identification and customization of special weights. We can also provide accessories and packaging for our products.




COVID-19: Staying safe whilst we remain open

COVID-19: Staying safe whilst we remain open


On 16 March 2020 we implemented a number of measures to protect the wellbeing of our staff and to mitigate any supply issues to our customers. From a Calibration Laboratory service perspective, we have split our staff into two shifts to reduce contact within the business whilst maintaining laboratory continuity.
Our Sales, Accounts and Admin staff are all working from home for the foreseeable future.
We can assure you that we will continue to do all we can to protect our staff, customers and their families.

You can contact us by phone 045 896660, or by email info@classictechnology.ie Our business hours are Monday to Friday 8.30am-5pm