Newtons4th Ltd. (abbreviated as N4L) was founded in 1997 to provide customers innovative technologies and sophisticated analysis of accurate, easy-to-use measuring equipment at a lower cost price than equivalent instruments.

Product flexibility and the incentive to provide customers their desired solutions, resulted in the development of several innovative features in the ever-growing product line. Early 2015, N4L relocated their state-of-the-art development and manufacturing facility to the vicinity of Leicester Centre, England. The new venue encompasses over 2,040 m² (22.050 Ft²) and has a special ‘clean’ production area with environmental control. One section of the new building is assigned to the accredited calibration laboratory.

N4L’s product portfolio includes:

– Power Analyzers
– Frequency Response Analyzers
– Selective Level Meters
– Laboratory Power Amplifiers

The name ‘Newton’ (Sir Isaac) is synonym for the understanding of physical principles. His well-known three laws of nature are so straightforward and obvious, that they are easy to learn and apply. However, they also provide the means to analyze the movement of complex systems. The fourth law for innovation is to build on what has been previously determined.

Newtons4th – innovation based on established fundamental principles
Newtons4th Ltd. is registered ISO9001, the internationally recognized standard for the quality management of businesses. In recognition of the technical innovation and commercial success of the PPA series, N4L was rewarded the ‘Innovation 2010’ Queen award for companies.

For a complete list of N4L’s products, visit their website at


Latefa El Amrani

Latefa El Amrani


As an independent calibration laboratory of electrical/electronic temperature and geometric measuring equipment, we and our customers benefit from accurate measurement results and good traceability. This requires good and stable measurement and control equipment. To achieve this, a reliable partner is needed that offers high quality and thinks along with us, and TTMS is such a partner. We have been working in good collaboration with TTMS for many years. Technical problems are challenges for them and questions are answered quickly and adequately. TTMS is pro-active: they always think along with us. They are also customer-oriented, flexible, committed and reliable. They always live up their appointments. Also, they are experts, provide good advice and deliver the right equipment. In short, MetricControl likes to work with TTMS.

Hypex Electronics

Joop van Bijnen

Hypex Electronics

I have been doing business with TTMS for years. They offer us good advice, and have a wide range of products to choose from. Before we decide to purchase a product, TTMS allows us to use a demonstration model to experience for a few days whether the product meets our expectations. They think along with us and don't try to sell me just anything. Should it occur, for whatever reason, that there is a defect in the equipment of TTMS, they will follow up with the required service with regard to repair and, if necessary, a replacement. With its service, TTMS invests in a good and lasting customer relationship.


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