The list of suppliers of the German electric and electronic industry
Actual revolution recorders (e.g. tachogenerators, angular momentum generators)
Tachymetric relays, speed monitors
Revolution measuring instruments and counters
Sensors for motion control
Measuring devices with built-in analog display with electromechanical movement, e.g. moving coils, moving iron instruments
Built-in measuring devices with digital feedback gauging systems, e.g. numerical displays, bar displays
Martin Janssen
HRB 732881, Stuttgart
1952
DE 309 504 304