Advanced Witness Systems Ltd AWS torque Tourque Innovation AWS

Torque Measurement, Control and Calibration

Advanced Witness Systems Ltd, The Home of Torque Innovation.


NEW Kepler 4 now available

About AWS

We are pleased to announce the latest version of our torque tool calibration and certification software, Kepler 4, is now available to trial or purchase.

This software written for the calibration and certification of torque wrenches to BS EN ISO 6789:2017, and is available in 3 versions:

Kepler 4 for Conformity

Kepler 4 for Calibration

Kepler 4 Combined

Please click on the options above to view the datasheets,
or click here to go to the product pages and find out more.

We have been trading for over 25 years as a premier designer of torque transducers, instrumentation control systems, calibration apparatus and certification software programs.


Unit 8 Beaumont Business Centre, Beaumont Close, Banbury, Oxfordshire,
OX16 1TN, UK

+44 (0) 1295 266 939


Click Here to download our latest sales catalogue.

ISO 6789:2017 News

Updated Docs

Following the release of the new torque wrench conformity and calibration standard, ISO 6789:2017, and it's BS EN equivalent, BS EN ISO 26789:2017, AWS have produced a white paper highlighting the main changes and requirements.

 It can be viewed by clicking below:

Also available in:


New Datasheets:

New Manuals:

Kepler 4

Updated Datasheets:

Kepler 4 Combined

Kepler 4 Conformity

Kepler 4 Calibration

Updated Manuals:

Latest News


09/02/2018-Kepler 4 Software Download launched
09/02/2018-Kepler 4 Manual added
07/01/2018-Updated Kepler 4 Datasheets added
06/10/2017-Updated Kepler 4 Datasheets added
19/07/2017-Additional translations of the White Paper added
03/04/2017-ISO 6789:2017 White Paper added
03/04/2017-Kepler 4 information added


A Science and Engineering Consultancy; operating to provide solutions to customers problems.

TESCA is a consultancy of Engineers, Scientists and Technicians of international reputation.

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