Frequency Meters / Tachometers without limits

z927_136
Measuring range in Hz.
Power supply: Battery
Number of digits: 8
z569_522
Measuring range 1/sec or 1/min HRA measurement.
Power supply: DC
Number of digits: 6
z569_524
Multifunction (Pulse, Frequency, Time).
Power supply: DC
Number of digits: 6
z569_52U
Universal with Dual functions 4 combinations.
Power supply: DC
Number of digits: 6
z569_52P
6 Count modes with Tachometer.
Power supply: DC
Number of digits: 6
z615_542
Measuring range 1/sec or 1/min HRA measurement.
Power supply: AC+DC
Number of digits: 6
z615_544
Multifunction (Pulse. Frequency, Time).
Power supply: AC+DC
Number of digits: 6
z615_54U
6 Count modes with Tachometer.
Power supply: AC+DC
Number of digits: 6
z615_54P
6 Count modes + Tachometer.
Power supply: AC+DC
Number of digits: 6