Preset Counters electronic

z494_901
Adding or subtracting.
Power supply: Battery
Number of digits: 2x6
z1288_907_908
1 or 2 presets (Pulse, Time) 5 kHz.
Power supply: AC+DC
Number of digits: 2x6
z1288_907_908
1 or 2 presets (Pulse, Time) 5 kHz.
Power supply: AC+DC
Number of digits: 2x6
923_924
Multifunction (Pulse, Frequency, Time) 60 kHz, 1-6 presets.
Power supply: AC+DC
Number of digits: 2x6
923_924
Multifunction (Pulse, Frequency, Time) 60 kHz, 1-6 presets.
Power supply: AC+DC
Number of digits: 2x6
z882_716
Multifunction (Pulse, Frequency, Time).
Power supply: AC+DC
Number of digits: 6
z883_717
Multifunction (Pulse, Frequency, Time), also with Ex.
Power supply: AC+DC
Number of digits: 6
z1589_560
Multifunction (Pulse, Frequency, Time), 2 presets.
Power supply: AC+DC
Number of digits: 6
z1286_571
Impulse, Frequency, Time (also reciprocal).
Power supply: AC+DC
Number of digits: 6
z1361_572
Dual preset counter with 4 outputs and analogue output.
Power supply: AC+DC
Number of digits: 8