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Optimizing the performance of Paper Machine Clothing

Feltest is an independent supplier of easy-to-use handheld tools and provider of in-depth knowledge and innovative technology for optimizing the performance of Paper Machine Clothing like forming fabrics, press felts and dryer screens.

We are the first choice of Pulp and Paper mills worldwide to help maximize the runnability of paper machines and significantly reduce operational costs. Our customers calculate payback time in minutes rather than months or years.

All our products are designed to protect workers, ensuring their safety and comfort to the highest degree. The performance data from our precision instruments lead to informed, fact based decisions that result in a better bottom line for the paper mill.

Our global mission is to strengthen the position of the pulp & paper industry and its marvelous product as a crucial step in building a true circular economy.


The roots of Feltest go back to 1992. Press felt designer Niek Lensvelt from the Netherlands wanted to know how the compaction of felts changed over time, so that he could improve the performance of his felts.

As there was no appropriate instrument on the market that could measure on a running paper machine with the desired accuracy and repeatability, he designed an instrument himself. The result of his efforts is the original Caliper Gauge, nowadays called the Caliper Profiler Gauge “Classic”.

In 1995, Niek’s son Marcel joined the company. Together, they were responsible for the Sales and Service for several Paper Machine Clothing suppliers. In 2008, Niek retired and Marcel continued Feltest, regularly adding new, highly specialized, high quality products to the portfolio.


Get in contact

Do you have a subject you want to discuss per (video) call? Plan a free 15 minute call with Marcel to discuss Paper Machine Clothing related problems on your machine, questions you may have using Feltest instruments or interpreting the measuring results.


Marcel Lensvelt


Entrepreneur since elementary school. Hated math but studied mechanical engineering. Loves art house movies and paper machines.

Plan a call

Janneke van Tongeren-Dral


Started her career as an industrial pharmacist. Now she’s taking care of your orders and in the meantime fine tuning our logistical processes.



Nanette Tulfer - Jannink


A busy bee who runs her own B&Bveluwezoom and in the mean time keeps our financial records in perfect shape.


Selma Wijkamp


Can be found in the saddle of her favorite horse every Friday and likes to learn new languages.


Michelle Koster-Chong


Nina Korbee


Started in September 2022 after getting her Bachelor Degree International Business. She has a close relationship with chocolate.