NDT MainCal
Welcome to NDT MainCal headquarters

NDT MainCal Ltd Established 1991

A specialist NDT related equipment calibration house for the NDT industry. The founders brought more than 100 hundred years of NDT experience to the company.

Over the years the NDT MainCal customer base has grown to include a diverse range of businesses ranging from self-employed NDT technicians to blue chip companies located worldwide.

In response to customer needs our range of services has also expanded to include Radiation Protection Advisory services, bespoke equipment manufacture and supply of radiography enclosures/cabinets & associated safety systems.

Other services such as NDT Level 3 consultancy and formal NDT technician training are available through our trading partners.


In 2012 having outgrown our original premises in New Mills we moved to our current state of the art facility in Whaley Bridge, Derbyshire. Here our highly skilled workforce offers NDT equipment calibration, repair and maintenance of all types of NDT equipment.

Also as NDT industry specialists we offer free friendly advice on such matters as customer specific calibration procedures, to help meet the requirements of accreditation bodies such as NADCAP, or radiation protection advice, to meet the requirements of the Ionising Radiation Regulations.

Cost Effective NDT Calibration, Repair & Radiation Protection Services

NDT MainCal can offer a cost effective service through the provision of a one-stop shop for all of your NDT Calibration, repair and Radiation Protection requirements


  • Customer service
  • Quality
  • Knowledgeable and experienced staff
  • Keen pricing
  • Fast turn around


We also provide training tailored to the needs of Managers, Technicians and Radiation Protection Supervisors either on site or at our Whaley Bridge headquarters.

Whilst NDT related clients remain a major part of our customer base, we service a wide range of RPA customers in other sectors including the public sector.

NDT Equipment Calibrations

All our calibrations are carried out under our ISO 9001:2008 registered quality system.

Radiography enclosures & Cabinets

Our services range from design consultancy to custom turnkey packages and refurbishment of existing enclosures & cabinets.

RPA Services

We offer RPA Services and training to Industrial, commercial and public sectors.

NDT bespoke equipment offered

MainCal offer customers professional consultation and bespoke equipment development.

PDF document downloads

We offer a selection of PDF documents on line covering a range of certificates, services and product information in our downloads section.

Partners of NDT Maincal

We work with our sister companies to provide services to the aerospace, aviation and other industries.

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