Technical requirements and verification for watches and watch movements; watches with electrical energy source, frequency of oscillating system <kleiner => 1000 Hz— 2 стр.
Technical requirements and verification for clocks and clock movements with electrical energy source; frequency of oscillating system <kleiner => 1000 Hz— 3 стр.
Technical requirements and verification for clocks and clockmovements with electrical energy source; frequency of resonator <kleiner => 1000 Hz, terms of delivery for clock movements— 2 стр.