Advanced Witness Systems Ltd AWS torque Tourque Innovation AWS

Torque Measurement, Control and Calibration

Kepler 4 Program Suite for Torque Tools

Kepler 4 is a combined program for the calibration and conformity of torque wrenches to BS EN ISO 6789:2017, BS EN ISO 6789:2003 or your own in house standards. It uses a system of databases to keep track of each individual torque wrench and all associated information.





ADMS Kepler 4 Series of software programs are designed to meet the new BS EN ISO 6789:2017 standard for conformity and calibration of Torque Tools.

ISO 6789 is the internationally recognised standard to which torque wrenches must be calibrated. A calibration certificate to ISO 6789 states that a tool meets quality control regulations and accurately applies the correct torque. 

Kepler 4 is built around a new works orders database, which ties together the customer, tool, reading & certificate. Historic calibration and conformity certificates can be found from searching by customer and tool, by works order number, or by certificate number.

The program suite consists of three different versions:

  • Kepler 4 Conformity
  • Kepler 4 Calibration
  • Kepler 4 Combined

Kepler 4 Conformity is written to meet BS EN ISO 6789:2017 Part 1, and Kepler 4 Calibration is written to meet Part 2. The Kepler 4 Combined version meets both parts 1 and 2, and unlocks the use of both parts of the other two versions.

Kepler 4 can be used with ISO 6789:2003, to allow phased migration to the new standard. In-house standards can also be set up to meet specific requirements.

A full comparison between the versions can be found on the specification page, as well as a comparison to Kepler 3. All versions allow for quick, accurate and reliable calibration of torque tools to international recognised standards, and to in-house standards.

Kepler 4 Conformity

Kepler 4 Calibration

Kepler 4 Combined

Kepler 4 Conformity complies with BS EN ISO 6789:2017 Part 1, allowing the automatic calculation of the mean deviation and mean value for each setting.

It also calculates the deviation for each reading, and indicates by colour whether the reading is within tolerance to the selected standard.



Kepler 4 Calibration complies with BS EN ISO 6789:2017 Part 2, allowing the automatic calculation using new formulae of the mean, deviation and combined uncertainty of each set of readings, for each torque tool.

It allows full tracking of tools calibration performance and history, and the production of a report listing tools that require calibrating.

It also features Production Line capabilities, for hourly or daily tool reliance performance.


Kepler 4 Combined is a combination of the other two versions.

It complies with BS EN ISO 6789:2017 Part 1, allowing the automatic calculation of the mean deviation and mean value for each setting. It also calculates the deviation for each reading, and indicates by colour whether the reading is within tolerance to the selected standard.

It also complies with BS EN ISO 6789:2017 Part 2, allowing the automatic calculation using new formulae of the mean, deviation and combined uncertainty of each set of readings, for each torque tool. It allows full tracking of tools calibration performance and history, and the production of a report listing tools that require calibrating. It also feautres Production Line capabilities, for hourly or daily tool reliance performance.

Shared Features

  • Option to operate in 6789:2003 to allow phased migration to 6789:2017.
  • Built around a new works orders database, which ties together the customer, tool, reading & certificate.
  • Historic calibration and conformity certificates can be found from searching by customer and tool, by works order number, or by certificate number.
  • User generated databases for customers, instruments, tools, model types, & standards.
  • Multiple operator accounts for users, maintainers & administrators (with passwords).
  • Data output and report generation collated and filtered from any combination of good and out of tolerance tools.
  • Auto or manual certificate numbering.
  • Select different printers for readings, labels, and reports/certificates.
  • Fast tool entry from model database.
  • Multiple translations available, including the facility to create your own translation.
  • Tool performance & data input via COM port and keyboard.
  • Option for bar code direct entry.
  • Bespoke templates easily created for certificates, reports and labels.
  • Import and Export readings for efficient database usage.
  • Cloning facility speeds multiple tool data entry.
  • Archive all readings within a selected period.
  • Tool area and station location.
  • All certificate print details recorded. Enables exact facsimile reproduction.
  • Auto print option to print reports of readings as soon as they are completed.
  • New operating & improved screens.
  • Colour configuration.

System Requirements:

Minimum Screen Resolution: 1280x768.
Software is a .NET application using an SQL Database.
Minimum System: i5 Processor or equivalent, 4GB RAM, on board graphics, 500GB HDD.
Keyboard & Mouse Interface.