Music
An important tool for the definition of the absolute pitch are tuning
forks from the special workshop in Zella-Mehliser Arno Barthelmes.
The tuning fork of the standard norm-tone has the frequency of 440 Hz for the note
a1.
Adapted to the special desires of the customer we manufacture each tuning fork in the
frequency range from 16 Hz to 5000 Hz in different dimensions and remarks. A further
speciality of our house is the production of tuning forks with adjustable pitches.