Greiner Vibrograf was founded in Langenthal in 1938 by Rudolf Greiner and developed into a leading manufacturer of watch testing and cleaning technology.

After being taken over by Helmut Klein GmbH in 1990, it gained a new international focus under the management of the Klein family and consolidated its market position through continuous innovation.

Today, Greiner Vibrograf stands for cutting-edge technology in the fields of frequency and rate regulation, water resistance testing, demagnetisation and watch cleaning.