Precision moulded caliper sensors manufactured in the UK

12 Jun 2026

Complex miniature component specialist OF Bell manufactures caliper sensors for use in intelligent pigging technologies utilised by the inline pipeline inspection sector.

OF Bell manufactures caliper sensors for inline inspection and intelligent pigging technologies that are developed and implemented by our clients operating in the utilities sector worldwide, monitoring and protecting the extraction and supply of essential oil and gas around the world.

Developed and manufactured by our UK-based team at our facility in Bishop Auckland, caliper sensors by OF Bell are produced entirely in-house to bespoke client specification. From materials consultancy to tooling, moulded plastics and caliper sensor assembly, confidential manufacturing processes prioritise our clients' commercial interests, preserving the integrity and intellectual property in unique product designs.


 

 

Caliper sensors for intelligent pigging that protects essential utilities pipelines 

Caliper sensors are applied by our clients in non-invasive, intelligent inline inspection pigging tools to measure deflection of each "arm" within the tool as the smart pig passes through the pipeline.

Precision measurement caliper sensors measure the condition of the pipeline's interior, providing essential data on the pipeline's integrity and health by identifying weaknesses such as corrosion, geometry, wall thickness, defects and anomalies. Pigging prevents leaks and wastage of valuable product, whilst ensuring pipelines are compliant with local and international regulations and operating safely.

Caliper sensors, as well as products such as triaxial MFL sensors, are highly accurate, reliable and hardwearing, recording data instantly that is used to inform the proper maintenance and repair of pipelines worldwide.   

Metal replacement consultancy for cost-saving caliper sensor manufacture in the UK by OF Bell 

Machined aluminium housing for caliper sensor cabling and electronics can prove costly. Ever-increasing materials and manufacturing prices drive up production costs, with knock-on effects through to the end purchaser. 

OF Bell delivers expert metal replacement materials consultancy in collaboration with our inline inspection and intelligent pigging technology innovator clients during development of caliper sensor components, engineering moulded plastic housings that offer clients significant cost savings over aluminium alternatives. 

Lightweight, strong and hardwearing moulded plastic housings for caliper sensors are capable of withstanding repeated runs of intelligent pigs through pipelines, and make a reliable yet cost-effective option which supports clients looking to scale up, and speed up, production of pigging technologies.

Moulded plastics expertise for scalable caliper sensor manufacture 

An injection moulding and moulded plastics specialist, OF Bell's team advises clients on effective metal replacement techniques backed by unbeatable knowledge and understanding of intelligent pigging processes, technologies and materials. 

Why choose OF Bell for caliper sensor manufacture in the UK?

  • Dedicated, collaborative support to develop caliper sensor components in partnership with inline inspection technology clients, applying our team's niche understanding of inline inspection and intelligent pigging processes.  
  • OF Bell's plastics specialists benefit from years of experience in resins and potting techniques, ensuring that every unit works accurately and consistently in demanding environments.
  • Housings for caliper sensors are precision-moulded using tooling that is designed and engineered in-house in our own, dedicated tooling workshop. Prototyping can be undertaken using 3D printing to develop housing products quickly and accurately.
  • OF Bell advises clients as to suitable metal replacement plastics compounds according to their bespoke intelligent pigging tool designs, applications and production line requirements, engineering caliper sensor units to meet budget, production and application needs.
  • High-performance injection moulding of caliper sensor units for use in inline inspection is undertaken in-house on our state-of-the-art injection moulding machines, with 24/7 production capacity allowing for significant scale-up to keep production lines moving.  

Caliper sensors for intelligent pigging that protects essential utilities pipelines

Complete caliper sensor electronics manufacture for inline inspection & intelligent pigging

OF Bell is a complete manufacturer of electronics, sensors and complex miniature components for the inline inspection and intelligent pigging sector. 

Caliper sensors applied in smart pigging tools are assembled in-house by our experienced electronics team, following ISO-certified quality monitoring processes that give clients reassurance in our consistent manufacturing standards of every unit.

Each caliper sensor unit and its cabling is potted to customer specifications using our own precision injection moulding technology, and units monitored to ensure a good seal that will protect against tough conditions without compromising the integrity of the sensors' precision electronics. Prior to prompt dispatch throughout the UK and worldwide, OF Bell's caliper sensors are fully tested using processes that replicate conditions in the field and supplied with test data for complete transparency. 

OF Bell's unique expertise in electronics and caliper sensor design and assembly, paired with decades of precision tooling, high-performance injection moulding, potting and materials consultancy experience, delivers durable caliper sensors that perform accurately, reliably and consistently in the field whilst offering significant cost savings over machined aluminium components. With no expensive shipping or storage costs and no long lead times, caliper sensors Made in Britain by OF Bell keep intelligent pigging production lines moving.    

Caliper sensors for inline inspection, Made in Britain by OF Bell's miniature & complex component specialists

Since 1973, OF Bell has worked alongside clients in numerous sectors, from oil, gas and utilities to medical, construction, consumer goods and household products, as a trusted manufacturing partner based wholly in the UK to deliver fully-assembled, tested and quality-assured complex electronic components, sensors, assemblies and moulded plastics that form a vital part of supply chains across the UK and worldwide.

ISO-certified, Bishop Auckland-based in County Durham, UK, and with over 50 years' experience, from confidential in-house product design and development, materials consultancy and metal replacement, to injection moulding, assembly and testing of precision electronic, electrical and plastic parts, miniature and complex components, including precision caliper sensors for inline inspection and intelligent pigging, by OF Bell enable client businesses to achieve their full potential through reliable, confidential and complete complex component engineering.

Find out more about OF Bell's caliper sensor manufacturing in the UK

OF Bell's expert complex component engineering team in Bishop Auckland, County Durham, delivers highly-accurate caliper sensors that save clients £££s in production through effective and reliable metal replacement.

Get in touch to find out more about our manufacturing processes, our moulded plastics, precision sensor assembly, and to book a meeting with our team.


 

 

  

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