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


Giel van den Broeck

Giel van den Broeck


"TT&MS has always been ready to provide us with state-of-the-art testing and measuring equipment. Characteristic is that TT&MS offers an extremely good service, as well as extensive support in the specification and selection of the equipment. The employees are technically well versed, a valuable distinguishing factor compared to other players in the market. Moreover, this technical knowledge is accompanied by a constructive, solution-oriented and personal approach."

Signify Netherlands

Hans Misdom

Signify Netherlands

“I’ve known the people at TTMS for years. An open and honest relationship has developed in which we can say everything to each other, resulting in a short but powerful communication. This increases efficiency, both for me and for TTMS. Ever since I developed monitors at Philips, we have been using their video protocol test equipment for our latest protocols. By listening carefully, TTMS and their manufacturers respond to our needs. The mutual benefit is that we get good support and they make better testers. In my current developments and tests on Signify connected LED lighting systems, we use various power supplies, electronic loads and analyzers. If TTMS has something new that is of interest to me, they know that I am positively critical of it. I’m looking for reliable equipment that is easy to use and TTMS continues to keep an eye out for new possibilities. For many years now, we have had a pleasant cooperation that works both ways. They know the market well and know how to find the right manufacturers for the right equipment.”


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