If you work with electronic or mechanical instrumentation of any kind, the equipment you use will require regular maintenance. That maintenance should include calibration. GNW is a leading calibration services provider operating since 1974 in the on-site calibration process.
EXCELLENT
Based on 22 reviews
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Matty ReadTrustindex verifies that the original source of the review is Google.
Fast calibration great service would high recommended friendly helpful staffPosted on Google![]()
Andrew MaddoxTrustindex verifies that the original source of the review is Google.
Brilliant company, high quality work, fantastic customer service, excellent calibration service.Posted on Google![]()
Karen WardTrustindex verifies that the original source of the review is Google.
Great service...went above and beyond to help. Highly recommend GNW for your unique instrumentation needs.Posted on Google![]()
Ann BowersTrustindex verifies that the original source of the review is Google.
Excellent service, the staff go the extra mile, would definitely recommend and won't hesitate to use againPosted on Google![]()
Sam ProctorTrustindex verifies that the original source of the review is Google.
These guys are awesome and will meet or exceed your calibration requirements. Excellent calibration service.Posted on Google![]()
James hiltonTrustindex verifies that the original source of the review is Google.
Having used this company for a number of years I’ve always been more than happy with the service. Professional & personal service is second to none & attention to detail make dealing with them a pleasurePosted on Google![]()
Radwraps LtdTrustindex verifies that the original source of the review is Google.
Great customer service from start to finish, excellent calibration service and keeping us tip top for trading.. Would highly recommend..Posted on Google![]()
Dom TrofskiTrustindex verifies that the original source of the review is Google.
We have always had great service from GNW, nothing is ever too much trouble and we always get our orders on time. The team are very astute on site, we never have to worry when they are here and their Excellent Calibration Service gives us all a piece of mind. Their sales department is also very easy to deal with, Shaun always looks after us 😘Posted on Google![]()
Andy BrockTrustindex verifies that the original source of the review is Google.
Brilliant company, high quality work, fantastic customer service, excellent calibration service!Posted on Google![]()
Stephen MaddoxTrustindex verifies that the original source of the review is Google.
Extremely impressed with gnw instrumentation's professionalism when dealing with our calibration requirements. Would highly recommend in the future.
Not having your kit or equipment calibrated for a significant time will likely lead to faults, inaccuracies, inefficient operation, and a higher likelihood of accidents and injuries.
Insufficient equipment maintenance may often result in a voided warranty or issues with your insurance.
GNW Instrumentation was established in 1974, offering on-site calibration services, and we provide purpose-built, tailored services for each client to meet their specific requirements.

ISO 9001-2015 accredited

Audited annually by European Certification Group

SAFE CONTRACTOR APPROVED

REGISTERED WITH AVETTA
The on-site calibration process is the sequence of steps we follow when our specialists visit your site. Our on site calibration service tests, adjusts and verifies your equipment without removing it from the environment in which it usually operates, and this page explains exactly how that process runs from first contact to certification.
This approach is often favoured above the off-site alternative, as it is usually quicker – which means less downtime. What’s more, there is less likelihood of machinery being damaged in transit or of the calibration being undertaken in an environment that does not reflect your usual working conditions.
We run the on-site calibration process across a wide range of on-site calibration sectors, including:
If you do not feel that the sector in which you operate is reflected above, don’t hesitate to get in touch with the GNW team – as this is by no means an exhaustive list.
Our approach to on-site calibration is straightforward, efficient, and transparent from start to finish.
We’ll ask you to complete an onboarding questionnaire, including details of all equipment requiring calibration. Once we confirm that the equipment can be calibrated, we’ll offer a free, no-obligation quote.
We’ll assess the information you gave us before arranging to visit your site or premises to begin the process – at a date and time that suits you. We will provide details of the work we intend to do and confirm that you are happy to proceed.
During our communications, we’ll give you a clear idea of what will happen on the day, including any downtime that may be involved, so that you can plan accordingly. Sometimes, we may need to take equipment off-site to work on it effectively during the calibration process.
If this is to be the case, we will provide you with details of how we will do this – including the safety measures we will take – and we will also provide you with a clear timescale for its return so that you are always in the loop.
If we find that certain equipment or machinery is experiencing maintenance issues, we will contact you to check whether you wish us to proceed with a repair. If you confirm, we will repair it and include the cost in our fee.
If you do not wish us to repair the equipment, we will happily dispose of it on your behalf.
Calibration is directly followed by verification. As soon as we have completed the process, we’ll provide you with a certificate of confirmation for your records – so you’ll have a record of what was done and when it took place.
The team at GNW Instrumentation has been providing exemplary on-site calibration services since 1974. We are an ISO 9001-accredited calibration company that is compliant with the very highest industry standards.
Our company is accredited by SafeContractor, ensuring that we adhere strictly to all current health and safety regulations. We also operate as part of Avetta’s supply chain network. Avetta is a supplier management body that carefully vets and prequalifies organisations that employ safe and sustainable business practices.
We are also UKAS accredited. UKAS is the National Accreditation Body for the United Kingdom that assesses calibration services across the country.
You can learn more about our accredited on-site calibration and the standards we are audited against.
If you have any further questions about our on-site calibration service or the sectors we specialise in, contact one of the GNW team today.
You can call on – 01704 536 010 or email directly. [email protected]