Tool Calibration & Certification

Name: Total Airtool Services (UK) Ltd
Address: Unit A Princes Drive, Industrial Estate, Coventry Road, Kenilworth, CV8 2FD, GB
Telephone: 01926 857193

Total Air Tool Services operates a UKAS ISO-17025 accredited calibration laboratory for torque tool calibration and certification. Every certificate issued carries traceability to the National Physical Laboratory (NPL) and is accepted without qualification under ISO 9001, IATF 16949 and AS9100 quality management systems. We calibrate all makes and models of power tools and hand torque tools, both at our Kenilworth depot and on-site at customer facilities.

What UKAS ISO-17025 Accreditation Means for Your Certificates

Not all calibration certificates carry the same evidential weight. A calibration certificate is only as credible as the laboratory that issues it and the traceability chain it can demonstrate.

UKAS ISO-17025 is the international standard for testing and calibration laboratory competence. It requires that the laboratory demonstrates technical competence, measurement traceability, and consistent application of calibration methods, and that this is independently assessed and verified by the UK Accreditation Service.

A certificate issued from a UKAS ISO-17025 accredited laboratory, with traceability to NPL, gives your quality auditors a complete and unbroken traceability chain from your production tool to a national measurement standard. That is the level of evidence required by IATF 16949 (automotive) and AS9100 (aerospace) without exception, and accepted under ISO 9001 audits.

Tools We Calibrate

We calibrate the full range of torque tools used in industrial assembly and production:

DC electric assembly tools

Transducerised DC nutrunners, inline and angle electric screwdrivers, pistol-grip electric assembly tools and their associated controllers. This includes tools from Atlas Copco (Tensor ES, SR, ST, STR, SL, IxB), Delta Regis, Kolver, Delvo/Nitto Kohki, Ingersoll Rand, Desoutter and Cleco, among others.

DC assembly tool calibration requires specialist equipment and process knowledge that differs from hand torque wrench calibration. The tool is verified at multiple torque points across its programmed range, and the controller output is assessed alongside the mechanical delivery. Certificates are issued per tool and per controller configuration where applicable. Read more about our DC electric tooling service and calibration.

Pneumatic assembly tools

Pneumatic nutrunners, pistol and inline screwdrivers, and pulse tools used in assembly applications. Pneumatic tool calibration is carried out at representative air pressure with torque output verified at specified target values. Calibration is often scheduled alongside a service visit.

Hand torque tools

Click-type, dial and digital torque wrenches, torque screwdrivers and torque multipliers. Calibrated to ISO 6789 where applicable, with UKAS-traceable certification.

Calibration Intervals

The appropriate calibration interval depends on the tool type, its application, usage intensity and the quality standard under which the production process operates.

For DC electric assembly tools in safety-critical or quality-critical fastening applications, automotive, aerospace, rail, annual calibration is the minimum baseline, with many production environments requiring six-monthly intervals. Tools that have been repaired, modified or subjected to a significant mechanical event should be recalibrated before returning to production regardless of the last calibration date.

We can establish a calibration schedule for your tool fleet and issue advance reminders when certificates are approaching expiry. For facilities operating under IATF 16949 or AS9100, we can structure the schedule and documentation to align with your internal audit cycle. View all services and maintenance programmes.

On-Site Calibration

For facilities where removing tools from production is impractical, we carry out calibration on-site. Our engineers bring calibrated reference equipment and issue certificates on the day for tools that pass calibration without adjustment.

On-site calibration is available across the UK from our Kenilworth service centre. It is particularly suited to facilities with large tool fleets, production-line integrated tools that cannot be removed without line stoppage, or audit situations requiring rapid turnaround without shipping time.

Contact us to discuss on-site scheduling and to receive a fixed-price quote based on your tool fleet and location.

Deliverables

What you get from a Tool Calibration & Certification visit.

D / 01

UKAS ISO-17025 accreditation

Laboratory independently assessed and approved by the UK Accreditation Service. Certificates accepted by quality auditors under ISO 9001, IATF 16949 and AS9100 without exception.

D / 02

NPL traceability

Every certificate carries an unbroken traceability chain to the National Physical Laboratory, the UK national measurement standard. Required for IATF 16949 and AS9100 audit compliance.

D / 03

All tool types calibrated

DC electric assembly tools, transducerised nutrunners and their controllers, pneumatic assembly tools, click-type and electronic torque wrenches, torque multipliers, all makes and models.

D / 04

Individual certificate per tool

Each tool receives a certificate recording the tool identification, date of calibration, measured values, calibration equipment reference and traceability, standard applied, and next calibration due date.

D / 05

On-site calibration available

Our engineers bring calibrated reference equipment to your facility. Certificates issued on the day. Suitable for large fleets, line-integrated tools, or audit-driven turnarounds.

D / 06

Fleet scheduling and reminders

We establish a calibration schedule for your tool fleet and issue advance reminders before certificates expire. Documentation structured to align with IATF 16949 and AS9100 audit cycles.

Process

How a Tool Calibration & Certification works.

One visit, minimal disruption.

01 · Receipt
Tool arrives and pre-calibration check
Tools arriving at our Kenilworth laboratory are logged and inspected. Any mechanical condition that could affect calibration results, worn components, incorrect lubrication, physical damage, is identified and reported before calibration proceeds.
02 · Calibration
Verified against a known standard
Torque output is measured using calibrated transducers, referenced against our UKAS-accredited equipment. Where the tool's output falls outside the required tolerance, adjustment is carried out before the calibration record is finalised.
03 · Certification
Certificate issued, same day for laboratory calibrations
Each tool receives an individual calibration certificate recording tool identification, date, measured values, calibration equipment reference and traceability, standard applied, and next calibration due date. Issued on the same day for laboratory calibrations where the tool is in acceptable condition.

FAQ

Questions people ask before booking.

What is the difference between a UKAS-accredited calibration certificate and a standard calibration certificate?

A UKAS ISO-17025 accredited certificate is issued by a laboratory whose competence and measurement traceability has been independently assessed and approved by the UK Accreditation Service. It provides an unbroken traceability chain to a national measurement standard (NPL in the UK). A non-accredited certificate does not carry the same independent verification and may not be accepted by quality auditors under IATF 16949 or AS9100.

How often do DC electric assembly tools need calibrating?

In most production environments, annually as a minimum. Safety-critical and quality-critical applications (automotive, aerospace, rail) typically require six-monthly calibration. Any tool that has been repaired, dropped or modified should be recalibrated before returning to production.

Do you calibrate tools from brands you haven't supplied?

Yes. We calibrate all major makes and models of powered assembly tools and hand torque tools regardless of where they were purchased.

Can you calibrate tools on-site at our facility?

Yes. On-site calibration is available UK-wide. Contact us with your tool fleet details and location for a fixed-price quote.

What information appears on a calibration certificate?

Each certificate includes: tool identification (make, model, serial number), date of calibration, measured torque values, calibration equipment reference and traceability, the standard applied, the calibrating laboratory's UKAS accreditation reference, and the next calibration due date.

What is the typical turnaround for laboratory calibration?

Certificates are issued on the same day for tools calibrated at our Kenilworth laboratory where the tool is in acceptable condition and no repair is required. A free written quote is issued within two working days of enquiry.

Related services

Often booked alongside Tool Calibration & Certification.

All services

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Book tool calibration.

Free written quote within two working days. UKAS ISO-17025 certificates with NPL traceability issued on the day for laboratory calibrations. Call 01926 857193

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