What are the MiniProf Units?

The MiniProf family made by Greenwood Engineering includes the Rail, Wheel, Lightrail Wheel, Brake, Twinhead, Switch & Crossings and Wheel 400 measuring devices.

Each unit features a full-contact, knife-shaped contact point for seamlessly cutting through layers of dirt, grease, frost and leaves, making them suitable for use in virtually any working environment. We have clients in the rail, aerospace and automotive industries benefiting from using MiniProf units. 

Made from lightweight and ultra-strong titanium, the MiniProf units operate with a small magnetic measuring wheel and rotating high-resolution optical encoders. The combination of Bluetooth connectivity and professional Envision software gives the opportunity to wirelessly take a vast amount of measurements on Android smartphones, tablets and PCs, minimising risk while maximising efficiency.

Each new MiniProf device comes complete with a sturdy transport case that is waterproof, dustproof and impact resistant, so your MiniProf is kept safe in any workplace!

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MiniProf teating tool in use attached to a rail wheel

Key Features and the Technical Specifications

Accuracy is ensured due to the full contact point on all instruments. An impressive 20-30.000 individual points are collected in one simple swoop of the magnetic wheel. In addition, these measurements are collected in less than five seconds with an accuracy range of 9-11µm. 

All the instruments have an operating temperature of -15°C to +35°C with a battery life of 10 hours or 1,000 Bluetooth measurements. This can be extended even further when they are connected via USB, so if your MiniProf is going to be working hard, it’s no problem!

The MiniProf range has been specifically made for the quality control, maintenance and safety regulation of rail tracks, brakes and wheels. The easy to use instruments are perfect for using within rail depots and other places around the world.

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Our reputation for quality and trust has led us to supply some of the nation’s biggest brands.

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Discover more about MiniProf, head over to

Greenwood Engineering

Specialists in calibration

We provide verification, calibration and precision measurement services within our custom-built ISO/IEC 17025 accredited laboratories.

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The Calibration Professionals


Our calibration services can be accessed via our onsite service or by sending your equipment into our laboratories.

Calibration Services
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Coming to you

To minimise downtime and transportation costs our engineers can come onsite to complete the measurement services you require.
On-Site Services
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Managing your assets


CoMech provide customers with a free app and access to software to help with full asset management for your calibrations.

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