Looks cool and unusual. The handles above the dials serve to turn them.
Three pins, housing (ground), - and + windings. The threads of the terminals are filled with paint to prevent it from unwinding as a result of vibration).
Under the cover is a solenoid coil, a magnetic circuit, an anchor on a flat spring. This part is similar to the simplified design of the polarized relays of the time. And a ratchet mechanism that transmits translational motion to the rotation of the mechanism inside.
The pulse counter SB-1M/100 is used for counting pulses in various dosing systems or simply for counting pulses.
The impulse counter SB1M/100 is an electromagnet with a ratchet, to which signals (impulses) are applied. The SB-1M/100 counter is applied in the industry.
Pulse counter SB 1M/100 mechanical. It has 2 scales (x100 and x1). On the front side there are 2 knobs for setting zero (by rotating the dial, separately for each scale), on the back there are pulse inputs (+ and -) and ground.
SB-1M/100 has no mounting holes. It was conceived in a desktop version.
Overall dimensions of the impulse counter SB-1M/100, mm 120x80x70